Periodic solutions for a singular damped differential equation
Crossref DOI link: https://doi.org/10.1186/s13661-014-0269-1
Published Online: 2015-01-10
Published Print: 2015-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Li, Jing
Li, Shengjun
Zhang, Ziheng
License valid from 2015-01-10
