@article{MASLO_1955_5_3_a1,
     author = {Kolibiar, Milan},
     title = {O zamenite\v{l}n\'ych rel\'aciach},
     journal = {Mathematica slovaca},
     pages = {137--139},
     year = {1955},
     volume = {5},
     number = {3},
     mrnumber = {0078381},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1955_5_3_a1/}
}