TY  - JOUR
AU  - H.J.A.M. Heijmans
TI  - Structured Populations, Linear Semigrous and Positivity.
JO  - Mathematische Zeitschrift
PY  - 1986
SP  - 599
EP  - 618
VL  - 191
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1986__191_173704/
ID  - MZ_1986__191_173704
ER  -