Aubin, Jean-Pierre; Bonneuil, Noël; Maurin, Franck - In: Mathematical Population Studies 9 (2000) 1, pp. 1-31
Co-variates are incorporated into a general model of non-linear structured population dynamics. The proof of the existence and uniqueness of the solutions results from those of a special set, the invariance envelope. It is also valid in presence of state constraints, and solutions need only to...