@article{105178, author = {Ji\v r\'\i\ Sichler}, title = {${\frak A} (1,1)$ can be strongly embedded into category of semigroups}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {009}, year = {1968}, pages = {257-262}, zbl = {0167.28404}, mrnumber = {0237395}, language = {en}, url = {http://dml.mathdoc.fr/item/105178} }
Sichler, Jiří. ${\frak A} (1,1)$ can be strongly embedded into category of semigroups. Commentationes Mathematicae Universitatis Carolinae, Tome 009 (1968) pp. 257-262. http://gdmltest.u-ga.fr/item/105178/
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