@article{1177706108, author = {Johnson, N. L.}, title = {A Proof of Wald's Theorem on Cumulative Sums}, journal = {Ann. Math. Statist.}, volume = {30}, number = {4}, year = {1959}, pages = { 1245-1247}, language = {en}, url = {http://dml.mathdoc.fr/item/1177706108} }
Johnson, N. L. A Proof of Wald's Theorem on Cumulative Sums. Ann. Math. Statist., Tome 30 (1959) no. 4, pp. 1245-1247. http://gdmltest.u-ga.fr/item/1177706108/