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@article{MS2_1961__9_165767, author = {Bjarni Jonsson and Alfred Tarski}, title = {On {Two} {Properties} of {Free} {Algebras.}}, journal = {Mathematica Scandinavica}, pages = {95--101}, publisher = {mathdoc}, volume = {9}, year = {1961}, zbl = {0111.02002}, url = {http://geodesic.mathdoc.fr/item/MS2_1961__9_165767/} }
Bjarni Jonsson; Alfred Tarski. On Two Properties of Free Algebras.. Mathematica Scandinavica, Tome 9 (1961), pp. 95-101. http://geodesic.mathdoc.fr/item/MS2_1961__9_165767/