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@article{MASLO_2002__52_2_a3, author = {Chajda, Ivan and Hala\v{s}, Radom{\'\i}r}, title = {Algebraic properties of pre-logics}, journal = {Mathematica slovaca}, pages = {157--175}, publisher = {mathdoc}, volume = {52}, number = {2}, year = {2002}, mrnumber = {1935115}, zbl = {1007.08003}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_2002__52_2_a3/} }
Chajda, Ivan; Halaš, Radomír. Algebraic properties of pre-logics. Mathematica slovaca, Tome 52 (2002) no. 2, pp. 157-175. http://geodesic.mathdoc.fr/item/MASLO_2002__52_2_a3/