Epstein, W. W. ; Lever, D. ; Leining, L. M... Proceedings of the National Academy of Sciences of the United States of America.
88
(1991)
21
- p.
9668-9670
,
1991
Epstein, W. W. ; Lever, D. C. ; Rilling, H. C. Proceedings of the National Academy of Sciences of the United States of America.
87
(1990)
19
- p.
7352-7354
,
1990