@article{CMUC_1976__17_3_a7,
     author = {Pt\'ak, Vlastimil and Zem\'anek, Jaroslav},
     title = {Continuite lipschitzienne du spectre comme fonction d'un op\'erateur normal},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {507--512},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {1976},
     mrnumber = {0493433},
     zbl = {0341.47019},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1976__17_3_a7/}
}