|Citation=Callataÿ, François de (2017), “Numismatists lived much longer. Average age at death of numismatists put into perspective (1550-2018)”, International Numismatic Council. Compte Rendu, 64, p. 50-65. | |Citation=Callataÿ, François de (2017), “Numismatists lived much longer. Average age at death of numismatists put into perspective (1550-2018)”, International Numismatic Council. Compte Rendu, 64, p. 50-65. |