@article{1102994733, author = {Maserick, P. H.}, title = {Half rings in linear spaces.}, journal = {Pacific J. Math.}, volume = {19}, number = {3}, year = {1966}, pages = { 137-148}, language = {en}, url = {http://dml.mathdoc.fr/item/1102994733} }
Maserick, P. H. Half rings in linear spaces.. Pacific J. Math., Tome 19 (1966) no. 3, pp. 137-148. http://gdmltest.u-ga.fr/item/1102994733/