@article{1102992102, author = {Snyder, L. E.}, title = {Stolz angle convergence in metric spaces.}, journal = {Pacific J. Math.}, volume = {23}, number = {3}, year = {1967}, pages = { 515-522}, language = {en}, url = {http://dml.mathdoc.fr/item/1102992102} }
Snyder, L. E. Stolz angle convergence in metric spaces.. Pacific J. Math., Tome 23 (1967) no. 3, pp. 515-522. http://gdmltest.u-ga.fr/item/1102992102/