An upper bound of the basis number of the lexicographic product of graphs. - Mohammed M. M. Jaradat; Maref Y. Alzoubi (Australas. J Comb., 2005)

On the basis number of the composition of different ladders with some graphs. - Maref Y. Alzoubi; Mohammed M. M. Jaradat (Int. J. Math. Math. Sci., 2005)