共 50 条
- [26] Positive periodic solution for enterprise cluster model with feedback controls and time-varying delays on time scales AIMS MATHEMATICS, 2024, 9 (03): : 6321 - 6335
- [28] Positive periodic solutions for discrete Nicholson system with multiple time-varying delays ELECTRONIC RESEARCH ARCHIVE, 2023, 31 (11): : 6982 - 6999