%0 Journal Article %A Neumann, B. H. %T Some Remarks on Semigroup Presentations %J Canadian journal of mathematics %D 1967 %P 1018-1026 %V 19 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-093-2/ %R 10.4153/CJM-1967-093-2 %F 10_4153_CJM_1967_093_2