@article{2291, author = {Keedy, M.L.}, title = {On a theorem of J\'onsson and Tarski}, journal = {Portugaliae mathematica}, volume = {16}, year = {1957}, pages = {11-14}, zbl = {0090.25002}, mrnumber = {0101200}, language = {en}, url = {http://dml.mathdoc.fr/item/2291} }
Keedy, M.L. On a theorem of Jónsson and Tarski. Portugaliae mathematica, Tome 16 (1957) pp. 11-14. http://gdmltest.u-ga.fr/item/2291/