@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/