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@article{MZ_1951__54_169220, author = {Alan Rose}, title = {The degree of completeness of a partial system of the2-valued {Propositional} {Calculus.}}, journal = {Mathematische Zeitschrift}, pages = {181--183}, publisher = {mathdoc}, volume = {54}, year = {1951}, zbl = {0045.29601}, url = {http://geodesic.mathdoc.fr/item/MZ_1951__54_169220/} }
Alan Rose. The degree of completeness of a partial system of the2-valued Propositional Calculus.. Mathematische Zeitschrift, Tome 54 (1951), pp. 181-183. http://geodesic.mathdoc.fr/item/MZ_1951__54_169220/