Research output: Contribution to journal › Article › peer-review
| Original language | Undefined |
|---|---|
| Pages (from-to) | 78-81 |
| Number of pages | 4 |
| Journal | ВЕСТНИК ЛЕНИНГРАДСКОГО УНИВЕРСИТЕТА. СЕРИЯ 1: МАТЕМАТИКА, МЕХАНИКА, АСТРОНОМИЯ |
| Issue number | 3 |
| State | Published - Jul 1987 |
ID: 9289032