@article{PMFA_1960__5_4_a5,
     author = {Pi\v{s}l, Milan},
     title = {Logaritmick\'a spir\'ala},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {416--423},
     publisher = {mathdoc},
     volume = {05},
     number = {4},
     year = {1960},
     zbl = {0104.15102},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1960__5_4_a5/}
}