Kaya, AbidinTylyshchak, AlexanderYildiz, BahattinGildea, Joe2019-10-152019-10-152020-05-07Gildea, J., Kaya, A., Tylyshchak, A. & Yildiz, B. (2020). A Modified Bordered Construction for Self-Dual Codes from Group Rings. Journal of Algebra Combinatorics Discrete Structures and Applications, 7(2).2148-838Xhttp://hdl.handle.net/10034/622714We describe a bordered construction for self-dual codes coming from group rings. We apply the constructions coming from the cyclic and dihedral groups over several alphabets to obtain extremal binary self-dual codes of various lengths. In particular we find a new extremal binary self-dual code of length 78.enhttps://creativecommons.org/licenses/by-nc-nd/4.0/Group ringsSelf-dual codesCodes over ringsArticle2148-838XJournal of Algebra Combinatorics Discrete Structures and Applicationshttps://jacodesmath.com/index.php/jacodesmath/article/view/129