@article{100402, author = {Jan Ma\v r\'\i k and Vlastimil Pt\'ak}, title = {Norms, spectra and combinatorial properties of matrices}, journal = {Czechoslovak Mathematical Journal}, volume = {10}, year = {1960}, pages = {181-196}, zbl = {0093.24205}, mrnumber = {0120243}, language = {en}, url = {http://dml.mathdoc.fr/item/100402} }
Mařík, Jan; Pták, Vlastimil. Norms, spectra and combinatorial properties of matrices. Czechoslovak Mathematical Journal, Tome 10 (1960) pp. 181-196. http://gdmltest.u-ga.fr/item/100402/