@article{10_21136_CPM_1973_117817,
     author = {Obo\v{n}a, Jozef and Podtjagin, Nikolaj},
     title = {E\v{s}t\v{e} o niektor\'ych \v{d}al\v{s}{\'\i}ch vlastnostiach kriviek triedy {P} a {PP}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {357--368},
     publisher = {mathdoc},
     volume = {098},
     number = {4},
     year = {1973},
     doi = {10.21136/CPM.1973.117817},
     mrnumber = {0338895},
     zbl = {0281.53001},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1973.117817/}
}