@misc{PMFA_1957__2_1_a14,
     title = {Seismicky aktivni oblast v {Arktid\v{e}} [mapa]},
     journal = {Pokroky matematiky, fyziky a astronomie},
     publisher = {mathdoc},
     volume = {02},
     number = {1},
     year = {1957},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1957__2_1_a14/}
}