@article{MASLO_1955_5_4_a0,
     author = {Kluv\'anek, Igor},
     title = {O mno\v{z}inov\'ych syst\'emoch uzavret\'ych vzh\v{l}adom na niektor\'e mno\v{z}inov\'e oper\'acie},
     journal = {Mathematica slovaca},
     pages = {191--211},
     year = {1955},
     volume = {5},
     number = {4},
     mrnumber = {0075251},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1955_5_4_a0/}
}