Exhibit 99.2 JOINT FILING AGREEMENT The undersigned hereby agree that the statement on Schedule 13G with respect to the Common Stock of Uni-Marts, Inc., dated as of December 18, 2000, is, and any amendments thereto (including amendments on Schedule...

                                                                    Exhibit 99.2

                             JOINT FILING AGREEMENT



     The  undersigned  hereby  agree that the  statement  on  Schedule  13G with
respect to the Common Stock of Uni-Marts,  Inc.,  dated as of December 18, 2000,
is, and any amendments thereto (including  amendments on Schedule 13D) signed by
each of the undersigned  shall be, filed on behalf of each of us pursuant to and
in accordance with the provisions of Rule 13d-1(c) under the Securities Exchange
Act of 1934.


Date:  December 18, 2000                MIKECON CORP.

                                        By:     /s/ Xxxxx Xxxxxxx
                                                -------------------------------
                                                Name:  Xxxxx Xxxxxxx
                                                Title: Chairman of the Board


Date:  December 18, 2000                LUKOIL AMERICAS CORPORATION

                                        By:     /s/ Xxxxx Xxxxxxx
                                                -------------------------------
                                                Name:  Xxxxx Xxxxxxx
                                                Title: Chairman of the Board


Date:  December 18, 2000                OAO LUKOIL

                                        By:     /s/   Ralif Xxxxx
                                                -------------------------------
                                                Name:  Ralif Xxxxx
                                                Title: First Vice President