| First Author | Searle AG | Year | 1968 |
| Journal | J Hered | Volume | 59 |
| Issue | 6 | Pages | 341-2 |
| PubMed ID | 5713934 | Mgi Jnum | J:5111 |
| Mgi Id | MGI:53589 | Doi | 10.1093/oxfordjournals.jhered.a107739 |
| Citation | Searle AG (1968) An extension series in the mouse. J Hered 59(6):341-2 |