T. Fujita and F. Smarandache, “A Reconsideration of Advanced Concepts in Neutrosophic Graphs: Smart, Zero Divisor, Layered, Weak, Semi, and Chemical Graphs”, Neutrosophic syst. appl., vol. 25, no. 2, pp. 39–79, Feb. 2025, doi: 10.61356/j.nswa.2025.25481.