@article{1273779464, author = {WADA, SHUHEI}, title = {On Some Operators whose Products are Positive}, journal = {Nihonkai Math. J.}, volume = {10}, number = {1}, year = {1999}, pages = { 111-115}, language = {en}, url = {http://dml.mathdoc.fr/item/1273779464} }
WADA, SHUHEI. On Some Operators whose Products are Positive. Nihonkai Math. J., Tome 10 (1999) no. 1, pp. 111-115. http://gdmltest.u-ga.fr/item/1273779464/