@misc{AV_1931_2_4_a3,
     title = {Zpr\'avy},
     journal = {Aktu\'arsk\'e v\v{e}dy},
     pages = {215--229},
     year = {1931},
     volume = {2},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/AV_1931_2_4_a3/}
}