@article{04049897, title = {Modified Whyburn semigroups.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {11}, year = {1988}, pages = {205-207}, doi = {10.1155/S0161171288000249}, zbl = {0644.22001}, language = {en}, url = {http://dml.mathdoc.fr/item/04049897} }
Reynolds, Beth Borel; Schneider, Victor. Modified Whyburn semigroups.. International Journal of Mathematics and Mathematical Sciences, Tome 11 (1988) pp. 205-207. doi : 10.1155/S0161171288000249. http://gdmltest.u-ga.fr/item/04049897/