@article{SF_1975__10_134125,
     author = {J.E. Ault},
     title = {Group congurences on bisimple w-semigroups.},
     journal = {Semigroup forum},
     pages = {351--366},
     publisher = {mathdoc},
     volume = {10},
     year = {1975},
     zbl = {0299.20043},
     url = {http://geodesic.mathdoc.fr/item/SF_1975__10_134125/}
}