Directed graphs and its Boundary Vertices. - Manoj Changat; Prasanth G. Narasimha-Shenoi; Mary Shallet T. J; R. Ram Kumar (CoRR, 2016)

Boundary-type Sets of Strong Product of Directed Graphs. - Prasanth G. Narasimha-Shenoi; Bijo S. Anand; Mary Shallet T. J (CoRR, 2019)