@article{MV_1970_22_4_a8,
     author = {D. V. Thampuran},
     title = {Products of proximites},
     journal = {Matemati\v{c}ki vesnik},
     pages = {515 },
     publisher = {mathdoc},
     volume = {22},
     number = {4},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/MV_1970_22_4_a8/}
}