TY - JOUR AU - R. Dilão AU - A. Lakmeche TI - On the Weak Solutions of the McKendrick Equation: Existence of Demography Cycles JO - Mathematical modelling of natural phenomena PY - 2006 SP - 1 EP - 30 VL - 1 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1051/mmnp:2006001/ DO - 10.1051/mmnp:2006001 LA - en ID - MMNP_2006_1_1_a0 ER -