@article{RMF_2016_91_2_a2,
     author = {Calda, Emil},
     title = {Dirichlet\r{u}v princip v geometrick\'ych \'uloh\'ach},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {20--22},
     year = {2016},
     volume = {91},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2016_91_2_a2/}
}