@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/}
}