@article{RMF_2012_87_3_a5,
     author = {Calda, Emil},
     title = {Daj{\'\i} se v\'yrazy $\sqrt{a + \sqrt{b}}$, $\sqrt{a - \sqrt{b}}$ zjednodu\v{s}it?},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
     pages = {26--29},
     year = {2012},
     volume = {87},
     number = {3},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/RMF_2012_87_3_a5/}
}