@article{1273779616,
author = {TAKEMOTO, HIDEO and UCHIYAMA, ATSUSHI},
title = {A Remark of the Numerical Ranges of Operators on Hilbert Spaces},
journal = {Nihonkai Math. J.},
volume = {13},
number = {1},
year = {2002},
pages = { 1-7},
language = {en},
url = {http://dml.mathdoc.fr/item/1273779616}
}
TAKEMOTO, HIDEO; UCHIYAMA, ATSUSHI. A Remark of the Numerical Ranges of Operators on Hilbert Spaces. Nihonkai Math. J., Tome 13 (2002) no. 1, pp. 1-7. http://gdmltest.u-ga.fr/item/1273779616/