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@article{AIHPA_1986__45_3_327_0, author = {Gudder, Stanley}, title = {Logical cover spaces}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {327--337}, publisher = {Gauthier-Villars}, volume = {45}, number = {3}, year = {1986}, mrnumber = {868530}, zbl = {0612.03026}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AIHPA_1986__45_3_327_0/} }
Gudder, Stanley. Logical cover spaces. Annales de l'I.H.P. Physique théorique, Tome 45 (1986) no. 3, pp. 327-337. http://geodesic.mathdoc.fr/item/AIHPA_1986__45_3_327_0/