@misc{RMF_2023_98_4_a6,
     title = {Krit\'erium d\v{e}litelnosti sedmi},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {48--51},
     year = {2023},
     volume = {98},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2023_98_4_a6/}
}