ArticleIssue Date2015CitationProceedings of the Jangjeon Mathematical Society, v.18, no.3, pp.313 - 320PublisherJangjeon Research Institute for Mathematical Sciences and Physics
ArticleIssue Date2015CitationDiscrete and Continuous Dynamical Systems, v.35, no.8, pp.3417 - 3436PublisherDept. of Mathematics, Southwest Missouri State University