@article{PMFA_2009_54_1_a8,
     author = {Pravda, Vojt\v{e}ch},
     title = {Impaktn{\'\i} faktory astronomick\'ych \v{c}asopis\r{u}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {77--77},
     year = {2009},
     volume = {54},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_2009_54_1_a8/}
}