A new result on the existence of periodic solutions for LiƩnard equations with a singularity of repulsive type
Crossref DOI link: https://doi.org/10.1186/s13660-016-1285-8
Published Online: 2017-02-07
Published Print: 2017-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Lu, Shiping
License valid from 2017-02-07