| Publication Type: | Journal Article |
| Year of Publication: | 1881 |
| Authors: | D. A. Valle |
| Journal: | Atti. Reale Accademia Nacionale dei Lincei Series 3 |
| Volume: | 10 |
| Pagination: | 431-498 |
| Publication Type: | Journal Article |
| Year of Publication: | 1881 |
| Authors: | D. A. Valle |
| Journal: | Atti. Reale Accademia Nacionale dei Lincei Series 3 |
| Volume: | 10 |
| Pagination: | 431-498 |