Reference
Search for REF=[4189].
4189
Balch, W. E., Fox, G. E., Magrum, L. J., Woese, C. R. and Wolfe, R. S.
Methanogens: reevaluation of a unique biological group.
Microbiol. Rev.
43:
260-296, 1979.
PMID:
390357
.