@article{MV_1978_30_1_a42,
     author = {R. Dimitrijevi\'c},
     title = {On proximity ordered spaces},
     journal = {Matemati\v{c}ki vesnik},
     pages = {331 },
     year = {1978},
     volume = {30},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/MV_1978_30_1_a42/}
}