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@article{SF_1972__5_133938, author = {J.H. Carruth and C.E. Clark}, title = {Concerning restrictions of {Green's} {H} equivalence.}, journal = {Semigroup forum}, pages = {186--190}, publisher = {mathdoc}, volume = {5}, year = {1972}, zbl = {0259.20057}, url = {http://geodesic.mathdoc.fr/item/SF_1972__5_133938/} }
J.H. Carruth; C.E. Clark. Concerning restrictions of Green's H equivalence.. Semigroup forum, Tome 5 (1972), pp. 186-190. http://geodesic.mathdoc.fr/item/SF_1972__5_133938/