@article{CMUC_1993_34_2_a5,
     author = {Kramar, Edvard},
     title = {On the numerical range of operators on locally and on {H-locally} convex spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {229--237},
     year = {1993},
     volume = {34},
     number = {2},
     mrnumber = {1241732},
     zbl = {0806.47003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1993_34_2_a5/}
}