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@article{AM2_1978__18_136786, author = {Ronald D. Baker}, title = {Quasigroups and tactical systems.}, journal = {Aequationes mathematicae}, pages = {296--303}, publisher = {mathdoc}, volume = {18}, year = {1978}, zbl = {0393.05017}, url = {http://geodesic.mathdoc.fr/item/AM2_1978__18_136786/} }
Ronald D. Baker. Quasigroups and tactical systems.. Aequationes mathematicae, Tome 18 (1978), pp. 296-303. http://geodesic.mathdoc.fr/item/AM2_1978__18_136786/