Research output: Contribution to journal › Article › peer-review
| Original language | English |
|---|---|
| Pages (from-to) | 187-194 |
| Number of pages | 8 |
| Journal | Mathematical Notes of the Academy of Sciences of the USSR |
| Volume | 45 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Mar 1989 |
ID: 7884644