@article{RMF_2018_93_4_a6,
     author = {Calda, Emil},
     title = {Dv\v{e} \'ulohy z planimetrie},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {35--36},
     year = {2018},
     volume = {93},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2018_93_4_a6/}
}