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@article{PORMA_1974__33_4_115242, author = {Gastl, George C.}, title = {Bitopological spaces from quasi-proximities}, journal = {Portugaliae mathematica}, pages = {213--218}, publisher = {mathdoc}, volume = {33}, number = {4}, year = {1974}, mrnumber = {0385809}, zbl = {0311.54037}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1974__33_4_115242/} }
Gastl, George C. Bitopological spaces from quasi-proximities. Portugaliae mathematica, Tome 33 (1974) no. 4, pp. 213-218. http://geodesic.mathdoc.fr/item/PORMA_1974__33_4_115242/