On the domination number of the cartesian product of the cycle of length n and any graph. - Mohamed H. El-Zahar; Soheir Mohamed Khamis; Khalida Mohammad Nazzal (Discret. Appl. Math., 2007)

Equality in Vizing's Conjecture Fixing One Factor of the Cartesian Product. - Soheir Mohamed Khamis; Khalida Mohammad Nazzal (Ars Comb., 2010)