@article{MASLO_1971__21_3_a2,
     author = {Abrhan, Imrich},
     title = {O ($H,T$)-ide\'aloch direktn\'eho s\'u\v{c}inu pologr\'up},
     journal = {Mathematica slovaca},
     pages = {199--213},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {1971},
     mrnumber = {0302793},
     zbl = {0231.20021},
     language = {sl},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1971__21_3_a2/}
}