Research output: Contribution to journal › Article › peer-review
| Original language | Undefined |
|---|---|
| Pages (from-to) | 31-36 |
| Journal | ВЕСТНИК САНКТ-ПЕТЕРБУРГСКОГО УНИВЕРСИТЕТА. СЕРИЯ 1: МАТЕМАТИКА, МЕХАНИКА, АСТРОНОМИЯ |
| Volume | 4 |
| Issue number | 22 |
| State | Published - 1987 |
ID: 5561240