@article{1256044630,
author = {Higman, Graham},
title = {The solubility of sets of equations over groups},
journal = {Illinois J. Math.},
volume = {30},
number = {3},
year = {1986},
pages = { 222-229},
language = {en},
url = {http://dml.mathdoc.fr/item/1256044630}
}
Higman, Graham. The solubility of sets of equations over groups. Illinois J. Math., Tome 30 (1986) no. 3, pp. 222-229. http://gdmltest.u-ga.fr/item/1256044630/