SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G
                                 (Rule 13d-102)

           INFORMATION TO BE INCLUDED IN THE STATEMENTS FILED PURSUANT
          TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED
                            PURSUANT TO RULE 13d-2(b)

                               (Amendment No. 6)*

                OPEN JOINT STOCK COMPANY "VIMPEL-COMMUNICATIONS"
                                (Name of Issuer)

                                  COMMON STOCK
                         (Title of Class of Securities)

                                   68370R 10 9
                                 (CUSIP Number)

                                December 31, 2002
                      (Date of Event Which Requires Filing
                               of this Statement)

Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:
             [ ]      Rule 13d-1(b)
             [ ]      Rule 13d-1(c)
             [X]      Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).









                         Continued on following page(s)
                                Page 1 of 6 Pages






                                  SCHEDULE 13G
CUSIP No. 68370R 10 9                                               Page 2 of 6



1        Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

         DR. DMITRI B. ZIMIN

2        Check the Appropriate Box If a Member of a Group*
                                                     a.  |_|
                                                     b.  |_|

3        SEC Use Only

4        Citizenship or Place of Organization

         RUSSIAN FEDERATION

                    5        Sole Voting Power

                                     898,332 shares of Common Stock.
  Number of
   Shares
Beneficially        6        Shared Voting Power
  Owned By
    Each                             None.
  Reporting
   Person           7        Sole Dispositive Power
    With
                                     898,332 shares of Common Stock.

                    8        Shared Dispositive Power

                                     None.

9        Aggregate Amount Beneficially Owned by Each Reporting Person

         898,332 shares of Common Stock.

10       Check Box If the Aggregate Amount in Row (9) Excludes Certain
         Shares* |_|

11       Percent of Class Represented By Amount in Row (9)

         2.23% of the shares of Common Stock.  (In addition to the Common Stock,
         the Company  has  Preferred  Stock  outstanding.  The Common  Stock and
         Preferred  Stock  vote  together  as a single  class,  with each  share
         entitled  to one vote.  Thus,  the  reporting  person  may be deemed to
         effectively  control  approximately  1.92% of the  voting  stock of the
         Company.) See Item 4.

12       Type of Reporting Person*

                  IN





                                                                    Page 3 of 6



Item 1(a)      Name of Issuer:

               Open Joint Stock Company "Vimpel-Communications"

Item 1(b)      Address of the Issuer's Principal Executive Offices:

               Ulitsa 8-Marta,  Dom 10, Building 14, Moscow,  Russian Federation
               125083

Item 2(a)      Name of Person Filing:

               Dr. Dmitri B. Zimin

Item 2(b)      Address of Principal Business Office or, if None, Residence:

               Ulitsa  1-ya  Tverskaya-Yamskaya,  Dom 2,  Stroenie 1, Office 401
               Moscow, Russian Federation 125147

Item 2(c)      Citizenship:

               Russian Federation

Item 2(d)      Title of Class of Securities:

               Common Stock

Item 2(e)      CUSIP Number:

               68370R 10 9

Item 3         If This  Statement  is Filed  Pursuant  to Rule  13d-1(b),  or
               13d-2(b) or (c), Check Whether the Person Filing is a:

               This Item 3 is not applicable.

Item 4.        Ownership.

Item 4(a)      Amount Beneficially Owned:

               Dr. Zimin may be deemed the beneficial owner of 898,332 shares of
               Common Stock.

Item 4(b)      Percent of Class:

               Dr.  Zimin may be  deemed  the  beneficial  owner of 2.23% of the
               shares of Common  Stock.  (In addition to the Common  Stock,  the
               Company has  Preferred  Stock  outstanding.  The Common Stock and
               Preferred Stock vote together as a single class,  with each share
               entitled to one vote. Thus, the reporting person may be deemed to
               effectively  control  approximately  1.92% of the voting stock of
               the Company.)



                                                                    Page 4 of 6


Item 4(c)      Number of shares as to which such person has:

(i)            Sole power to vote or direct the vote:

               Dr.  Zimin,  indirectly  through BMT Capital  Limited,  a limited
               liability  company  organized  and  existing  under  the  laws of
               Bermuda,  an entity  indirectly  controlled by Dr. Zimin,  may be
               deemed  to have the  sole  power  to vote or  direct  the vote of
               898,332 shares of Common Stock,  representing 2.23% of the Common
               Stock.  (In  addition  to  the  Common  Stock,  the  Company  has
               Preferred Stock outstanding. The Common Stock and Preferred Stock
               vote together as a single class,  with each share entitled to one
               vote. As a result,  Dr. Zimin may be deemed to have sole power to
               vote or direct  the vote over  approximately  1.92% of the voting
               stock of the Company.)

(ii)           Shared power to vote or to direct the vote:

               None.

(iii)          Sole power to dispose or to direct the disposition of:

               Dr.  Zimin,  indirectly  through BMT Capital  Limited,  a limited
               liability  company  organized  and  existing  under  the  laws of
               Bermuda,  an entity  indirectly  controlled by Dr. Zimin,  may be
               deemed  to have  the sole  power  to  dispose  or to  direct  the
               disposition of 898,332 shares of Common Stock, representing 2.23%
               of the  Common  Stock.  (In  addition  to the Common  Stock,  the
               Company has  Preferred  Stock  outstanding.  The Common Stock and
               Preferred Stock vote together as a single class,  with each share
               entitled  to one vote.  As a result,  Dr.  Zimin may be deemed to
               have sole  power to  dispose  or to  direct  the  disposition  of
               approximately 1.92% of the voting stock of the Company.)

(iv)           Shared power to dispose or to direct the disposition of:

               None.


Item 5.        Ownership of Five Percent or Less of a Class. [X]

               Dr.  Zimin may be  deemed  the  beneficial  owner of 2.23% of the
               Common Stock.

Item 6.        Ownership of More than Five Percent on Behalf of Another Person.

               This Item 6 is not applicable.

Item 7.        Identification  and  Classification  of the Subsidiary  Which
               Acquired the  Security  Being  Reported On by the Parent  Holding
               Company.

               This Item 7 is not applicable.

Item 8.        Identification and Classification of Members of the Group.

               This Item 8 is not applicable.





                                                                    Page 5 of 6


Item 9.        Notice of Dissolution of Group.

               This Item 9 is not applicable.

Item 10.       Certification.

               This Item 10 is not applicable.




                            [SIGNATURE PAGE FOLLOWS]





                                                                    Page 6 of 6


                                    SIGNATURE

         After  reasonable  inquiry and to the best of his knowledge and belief,
the  undersigned  certifies that the  information set forth in this statement is
true, complete and correct.



Dated:  February 6, 2003                   By: /s/ Dmitri B. Zimin
                                           ------------------------------------
                                               Name: Dmitri B. Zimin