| Contact address: | |
| Dr. Vladimir B. Il'in | |
| Astronomical Institute | Phone: +7 (812) 4284263 |
| St.Petersburg University | Fax: +7 (812) 4287129 |
| Universitetskij pr., 28 |         |
| 198504 St.Petersburg | e-mail: vi2087@vi2087.spb.edu |
| RUSSIA |             |