@article{10_21136_CPM_1964_117492,
     author = {\v{S}id\'ak, Zbyn\v{e}k},
     title = {O po\v{c}tu kladn\'ych prvk\r{u} v mocnin\'ach nez\'aporn\'e matice},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {28--30},
     publisher = {mathdoc},
     volume = {089},
     number = {1},
     year = {1964},
     doi = {10.21136/CPM.1964.117492},
     mrnumber = {0180563},
     zbl = {0143.26305},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1964.117492/}
}