@article{PMFA_1977_22_6_a2,
     author = {Luxemburg, W. A. J.},
     title = {Ne\v{s}tandardn\'e \v{c}{\'\i}seln\'e syst\'emy a odovodnenie {Leibnizovho} infinitezim\'alneho po\v{c}tu},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {316--325},
     year = {1977},
     volume = {22},
     number = {6},
     mrnumber = {0491165},
     zbl = {0376.26014},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1977_22_6_a2/}
}