@article{1250187224, author = {Head, Tom}, title = {Preservation of coproducts by $\Hom\_R(M,-)$}, journal = {Rocky Mountain J. Math.}, volume = {2}, number = {4}, year = {1972}, pages = { 235-238}, language = {en}, url = {http://dml.mathdoc.fr/item/1250187224} }
Head, Tom. Preservation of coproducts by $\Hom_R(M,-)$. Rocky Mountain J. Math., Tome 2 (1972) no. 4, pp. 235-238. http://gdmltest.u-ga.fr/item/1250187224/