@article{MS2_1961__9_165768,
     author = {H. Jerome Keisler},
     title = {On {Some} {Results} of {Jonnsson} and {Tarski} {Concerning} {Free} {Algebras.}},
     journal = {Mathematica Scandinavica},
     pages = {102--106},
     publisher = {mathdoc},
     volume = {9},
     year = {1961},
     url = {http://geodesic.mathdoc.fr/item/MS2_1961__9_165768/}
}