Positive periodic solutions for a neutral Lotka–Volterra system with state dependent delays

Abstract: By using a fixed point theorem of strict-set-contraction, some new criteria are established for the existence of positive periodic solutions of the following periodic neutral Lotka–Volterra system with state dependent delayswhere are ω-periodic functions and are ω-periodic functions with respect to their first arguments, respectively. [Copyright &y& Elsevier]