@article{GDZPPN001250582,
title = {A new proof of the McAlister "P-theorem".},
journal = {Semigroup forum},
volume = {11},
year = {1975},
pages = {185-188},
language = {en},
url = {http://dml.mathdoc.fr/item/GDZPPN001250582}
}
Schein, B.M. A new proof of the McAlister "P-theorem".. Semigroup forum, Tome 11 (1975) pp. 185-188. http://gdmltest.u-ga.fr/item/GDZPPN001250582/