@article{CMUC_1978__19_2_a1,
     author = {Opic, Bohum{\'\i}r},
     title = {\"Uber \"aquivalente {Normen} in {Sobolevschen} {R\"aumen} mit {Belegungsfunktion}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {227--248},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1978},
     mrnumber = {0493310},
     zbl = {0379.46027},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1978__19_2_a1/}
}