On the Gosper-Petkovs(ek representation of rational functions. - William Y. C. Chen; Husam L. Saad (J. Symb. Comput., 2005)

Converging to Gosper's algorithm. - William Y. C. Chen; Peter Paule; Husam L. Saad (Adv. Appl. Math., 2008)

Another homogeneous q-difference operator. - Husam L. Saad; Abbas A. Sukhi (Appl. Math. Comput., 2010)