Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{AV_1938__7_2_a3, author = {Steffensen, J. F.}, title = {More multiplicity}, journal = {Aktu\'arsk\'e v\v{e}dy}, pages = {71--72}, publisher = {mathdoc}, volume = {07}, number = {2}, year = {1938}, zbl = {0018.32307}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AV_1938__7_2_a3/} }
Steffensen, J. F. More multiplicity. Aktuárské vědy, Tome 07 (1938) no. 2, pp. 71-72. http://geodesic.mathdoc.fr/item/AV_1938__7_2_a3/