@article{1102806460, author = {Halpern, Benjamin}, title = {A general coincidence theory.}, journal = {Pacific J. Math.}, volume = {79}, number = {2}, year = {1978}, pages = { 451-471}, language = {en}, url = {http://dml.mathdoc.fr/item/1102806460} }
Halpern, Benjamin. A general coincidence theory.. Pacific J. Math., Tome 79 (1978) no. 2, pp. 451-471. http://gdmltest.u-ga.fr/item/1102806460/