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@article{MZ_1952__56_169275, author = {Alan Rose}, title = {A {Formalisation} of {Post's} m-valued {Propositional} {Calculus.}}, journal = {Mathematische Zeitschrift}, pages = {94--104}, publisher = {mathdoc}, volume = {56}, year = {1952}, zbl = {0048.24407}, url = {http://geodesic.mathdoc.fr/item/MZ_1952__56_169275/} }
Alan Rose. A Formalisation of Post's m-valued Propositional Calculus.. Mathematische Zeitschrift, Tome 56 (1952), pp. 94-104. http://geodesic.mathdoc.fr/item/MZ_1952__56_169275/