TY - JOUR A1 - Keyfitz, B.L. A1 - Keyfitz, N. T1 - The McKendrick partial differential equation and its uses in epidemiology and population study Y1 - 1997 DO - 10.1016/S0895-7177(97)00165-9 JF - Mathematical and Computer Modelling VL - 26 IS - 6 SP - 1 EP - -9 ER -