@article{MASLO_1985__35_4_a7,
     author = {Draveck\'y, Jozef},
     title = {Product decomposition of a $sigma$-ring},
     journal = {Mathematica slovaca},
     pages = {373--375},
     publisher = {mathdoc},
     volume = {35},
     number = {4},
     year = {1985},
     mrnumber = {820634},
     zbl = {0592.28006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1985__35_4_a7/}
}