Multi-parameter, impulsive effects and positive periodic solutions of first-order functional differential equations
Crossref DOI link: https://doi.org/10.1186/s13661-015-0401-x
Published Online: 2015-08-11
Published Print: 2015-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Zhang, Xuemei
Feng, Meiqiang
License valid from 2015-08-11