Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1968__105_170972, author = {V. Istratescu and I. Istratescu}, title = {On {Normaloid} {Operators.}}, journal = {Mathematische Zeitschrift}, pages = {153--156}, publisher = {mathdoc}, volume = {105}, year = {1968}, zbl = {0159.19403}, url = {http://geodesic.mathdoc.fr/item/MZ_1968__105_170972/} }
V. Istratescu; I. Istratescu. On Normaloid Operators.. Mathematische Zeitschrift, Tome 105 (1968), pp. 153-156. http://geodesic.mathdoc.fr/item/MZ_1968__105_170972/