TY - JOUR AU - Šťastný, Karel TI - A note about premiums of disability benefits in connection with life insurance contract JO - Aktuárské vědy PY - 1938 SP - 55 EP - 59 VL - 7 IS - 2 UR - http://geodesic.mathdoc.fr/item/AV_1938_7_2_a1/ LA - en ID - AV_1938_7_2_a1 ER -