中国科学院数学与系统科学研究院期刊网
Optimal Harvesting for a Population System Modelling Periodic Environment and Hierarchical Age-Structure
LIU Rong, ZHANG Feng-qin
Acta Mathematicae Applicatae Sinica . 2025, (1): 33 -52 .  DOI: 10.20142/j.cnki.amas.202401033