@Article{JICS-14-010, author = {Guohua Jia and Shiping Lu}, title = {Existence of periodic solutions for second order delay differential equations with a singularity of repulsive type}, journal = {Journal of Information and Computing Science}, year = {2024}, volume = {14}, number = {1}, pages = {010--017}, abstract = {In this paper, the problem of existence of periodic solution is studied for the second order delay differential equation with a singularity of repulsive type }, issn = {1746-7659}, doi = {https://doi.org/}, url = {http://global-sci.org/intro/article_detail/jics/22427.html} }