@article{GDZPPN002431785, title = {Structured Populations, Linear Semigrous and Positivity.}, journal = {Mathematische Zeitschrift}, volume = {192}, year = {1986}, pages = {599-618}, zbl = {0595.92009}, url = {http://dml.mathdoc.fr/item/GDZPPN002431785} }
Heijmans, H.J.A.M. Structured Populations, Linear Semigrous and Positivity.. Mathematische Zeitschrift, Tome 192 (1986) pp. 599-618. http://gdmltest.u-ga.fr/item/GDZPPN002431785/