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@article{MZ_1979__165_172792, author = {Stephen D. Comer}, title = {The {Countable} {Chain} {Condition} and {Free} {Algebras.}}, journal = {Mathematische Zeitschrift}, pages = {101--106}, publisher = {mathdoc}, volume = {165}, year = {1979}, zbl = {0377.06008}, url = {http://geodesic.mathdoc.fr/item/MZ_1979__165_172792/} }
Stephen D. Comer. The Countable Chain Condition and Free Algebras.. Mathematische Zeitschrift, Tome 165 (1979), pp. 101-106. http://geodesic.mathdoc.fr/item/MZ_1979__165_172792/