Abstract A delayed three-species ratio-dependent predator-prey food-chain model without dominating instantaneous negative feedback is investigated. It is shown that the system is permanent under some appropriate condi...
We establish sufficient conditions for the existence and global attractivity of the nonnegativeperiodic solution of an integro-differential equation which can be taken as a generalization of amodel in describing the d...
In this paper, by constructing Liapunov functionals, we study the global attractivity of linear non-autonomous neutral differential difference equation and obtain some new easily-checked sufficient conditions for the ...