The corona between paths and cycles. - S. Nada; Adel T. Diab; A. Elrokh; D. E. Sabra (Ars Comb., 2018)

New types of graphs induced by topological spaces. - A. M. Kozae; Abd El Fattah El Atik; A. Elrokh; Mohammed Atef (J. Intell. Fuzzy Syst., 2019)