@article{1103034185, author = {Laffer, W. B. and Mann, H. B.}, title = {Decomposition of sets of group elements.}, journal = {Pacific J. Math.}, volume = {14}, number = {4}, year = {1964}, pages = { 547-558}, language = {en}, url = {http://dml.mathdoc.fr/item/1103034185} }
Laffer, W. B.; Mann, H. B. Decomposition of sets of group elements.. Pacific J. Math., Tome 14 (1964) no. 4, pp. 547-558. http://gdmltest.u-ga.fr/item/1103034185/