Research output: Contribution to Journal/Magazine › Journal article › peer-review
| <mark>Journal publication date</mark> | 30/06/1969 |
|---|---|
| <mark>Journal</mark> | Physics Letters A |
| Issue number | 8 |
| Volume | 29 |
| Number of pages | 2 |
| Pages (from-to) | 453-454 |
| Publication Status | Published |
| <mark>Original language</mark> | English |