@article{1102868627, author = {Goseki, Zensiro}, title = {On semigroups in which $x=xyx=xzx$ if and only if $x=xyzx$.}, journal = {Pacific J. Math.}, volume = {61}, number = {2}, year = {1975}, pages = { 103-110}, language = {en}, url = {http://dml.mathdoc.fr/item/1102868627} }
Goseki, Zensiro. On semigroups in which $x=xyx=xzx$ if and only if $x=xyzx$.. Pacific J. Math., Tome 61 (1975) no. 2, pp. 103-110. http://gdmltest.u-ga.fr/item/1102868627/