@article{PMFA_1964_9_4_a1,
     author = {Mi\v{s}o\v{n}, Karel and P{\'\i}rko, Zden\v{e}k},
     title = {Slo\v{z}en\'e rakety},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {223--239},
     year = {1964},
     volume = {9},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1964_9_4_a1/}
}