@article{AV_1936__6_3_a1, author = {Frant{\'\i}kov\'a, Ji\v{r}ina}, title = {Some approximate formulas}, journal = {Aktu\'arsk\'e v\v{e}dy}, pages = {102--106}, publisher = {mathdoc}, volume = {06}, number = {3}, year = {1936}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AV_1936__6_3_a1/} }