@article{MZ_1938__43_168768,
     author = {Dr. 0., Prag XVIII (C.S.R,.), Dobsch},
     title = {Matrixfunktionen beschr\"ankter {Schwankung}},
     journal = {Mathematische Zeitschrift},
     pages = {353--388},
     year = {1938},
     volume = {43},
     url = {http://geodesic.mathdoc.fr/item/MZ_1938__43_168768/}
}