@article{RMF_2011_86_3_a6,
     author = {Ko\v{z}u\v{s}ko, Jan},
     title = {4. ro\v{c}n{\'\i}k {Mezin\'arodn{\'\i}} olympi\'ady v astronomii a astrofyzice},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {45--47},
     year = {2011},
     volume = {86},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2011_86_3_a6/}
}