Enriquez E, Fernandez V, Punzalan T, Dayap J. Perfect Outer-connected Domination in the Join and Corona of Graphs. RMRJ [Internet]. 2016 Dec. 31 [cited 2024 May 3];4(2). Available from: https://rmrj.usjr.edu.ph/rmrj/index.php/RMRJ/article/view/165