We give asymptotic classification of the positive solutions of a class of two-dimensional nonlinear Volterra integro-differential equations. Also, we furnish necessary and sufficient conditions for the existence of such positive solutions.
"Classification of Positive Solutions of Nonlinear Systems of Volterra Integral Equations." Ann. Funct. Anal. 2 (2) 34 - 41, 2011. https://doi.org/10.15352/afa/1399900192