Binomial-combinatorial properties of clar structures. - Sherif El-Basil (Discret. Appl. Math., 1988)

Clar Polynomials of Large Benzenoid Systems. - Milan Randic; Sherif El-Basil; Sonja Nikolic; Nenad Trinajstic (J. Chem. Inf. Comput. Sci., 1998)

A Model for Combinatorial Organic Chemistry. - Sherif El-Basil (J. Chem. Inf. Comput. Sci., 2000)