Patel GB, Sprott GD, Fein JE. Isolation and characterization of Methanobacterium espanolae sp. nov., a mesophilic, moderately acidiphilic methanogen. Int. J. Syst. Bacteriol. 1990; 40:12-18.
The epithet espanolae has been corrected to espanolense in the volume one of the second edition of the Bergey's Manual of Systematic Bacteriology (published on 2001). However, since November 2000, such a correction is not allowed by Rule 61.Publication:
Anonymous. Judicial Opinion No. 81. Int J Syst Evol Microbiol 2008; 58:1755-1763.