TY - JOUR AU - Reinhard Bürger TI - Perturbations of Positive Semigroups and Applications to Population Genetics. JO - Mathematische Zeitschrift PY - 1988 SP - 259 EP - 272 VL - 197 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1988__197_1_183731/ ID - MZ_1988__197_1_183731 ER -