A Note on Vertex-Neighbor-Integrity of Sequential-Joined Graphs

The graphical parameter vertex-neighbor-integrity was introduced by Cozzens to measure invulnerability of networks. Dundar and Ozan discussed this parameter's properties of sequential-joined graphs. Unfortunately, the authors considered some special cases only and many mistakes appeared in their work. In this paper, based on our works done in 2005, we correct Dundar and Ozan's mistakes and discuss some related questions.