@article{GDZPPN001263374,
title = {Nonlinear perturbations of postive semigroups.},
journal = {Semigroup forum},
volume = {48},
year = {1994},
pages = {273-302},
zbl = {0835.47024},
url = {http://dml.mathdoc.fr/item/GDZPPN001263374}
}
Sikic, H. Nonlinear perturbations of postive semigroups.. Semigroup forum, Tome 48 (1994) pp. 273-302. http://gdmltest.u-ga.fr/item/GDZPPN001263374/