1. S. Arumugam, K. Ebadi and M. Manrique, “Co-Secure and Secure Domination in Graphs,” Util. Math. 94, 167– 182 (2014).
2. E. C. Castillano and R. A. L.Ugbinada, “Secure Domination in the join of graphs,” Appl. Math. Sci. 8 (105), 5203–5211 (2014).
3. E. J. Cockayne, O. Favaron and C. M. Mynhardt, “Secure domination, weak Roman domination and forbidden subgraphs,” Bull. Inst. Combin. Appl. 278 (13), 100–181 (2003).
4. T. W. Haynes et al., Fundamentals of Domination in Graphs (Marcel Dekker, New York, 1998).
5. Bounds on Co-Secure Domination in Graphs