@article{GDZPPN002304813, title = {Positive Solutions of a Nonlinear Integral Equation.}, journal = {Mathematische Annalen}, volume = {193}, year = {1971}, pages = {119-124}, zbl = {0203.42101}, url = {http://dml.mathdoc.fr/item/GDZPPN002304813} }
STUART, C.A. Positive Solutions of a Nonlinear Integral Equation.. Mathematische Annalen, Tome 193 (1971) pp. 119-124. http://gdmltest.u-ga.fr/item/GDZPPN002304813/