@article{01023067, title = {Stochastic approximation-solvability of linear random equations involving numerical ranges.}, journal = {Journal of Applied Mathematics and Stochastic Analysis}, volume = {10}, year = {1997}, pages = {47-55}, doi = {10.1155/S104895339700004X}, zbl = {0886.47037}, language = {en}, url = {http://dml.mathdoc.fr/item/01023067} }
Verma, Ram U. Stochastic approximation-solvability of linear random equations involving numerical ranges.. Journal of Applied Mathematics and Stochastic Analysis, Tome 10 (1997) pp. 47-55. doi : 10.1155/S104895339700004X. http://gdmltest.u-ga.fr/item/01023067/