PreyPredator Model with Constant Investment Rate forPrey and Constant Harvesting Rate for Predator underHolling-Ⅳ Functional Response
ZHANG Jing1, GAO Wenjie2, ZHOU Li1
1. School of Science, Qiqihar University, Qiqihar 161006, Heilongjiang Province, China;2. Institute of Mathematics, Jilin University, Changchun 130012, China