@article{1102971625, author = {Cramer, T. E.}, title = {Countable Boolean algebras as subalgebras and homomorphs.}, journal = {Pacific J. Math.}, volume = {35}, number = {3}, year = {1970}, pages = { 321-326}, language = {en}, url = {http://dml.mathdoc.fr/item/1102971625} }
Cramer, T. E. Countable Boolean algebras as subalgebras and homomorphs.. Pacific J. Math., Tome 35 (1970) no. 3, pp. 321-326. http://gdmltest.u-ga.fr/item/1102971625/