TY - JOUR A1 - Gompertz, Benjamin T1 - On the Nature of the Function Expressive of the Law of Human Mortality, and on a New Mode of Determining the Value of Life Contingencies Y1 - 1825 DO - 10.1098/rstl.1825.0026 JF - Philosophical Transactions of the Royal Society of London VL - 115 SP - 513 EP - -583 ER -