@article{1102971284, author = {Valentine, J. E. and Wayment, S. G.}, title = {Wilson angles in linear normed spaces.}, journal = {Pacific J. Math.}, volume = {39}, number = {3}, year = {1971}, pages = { 239-243}, language = {en}, url = {http://dml.mathdoc.fr/item/1102971284} }
Valentine, J. E.; Wayment, S. G. Wilson angles in linear normed spaces.. Pacific J. Math., Tome 39 (1971) no. 3, pp. 239-243. http://gdmltest.u-ga.fr/item/1102971284/