A unified treatment of a class of combinatorial sums. - Fangjun Hsu; Leetsch C. Hsu (Discret. Math., 1991)

On some classes of inverse series relations and their applications. - Wenchang Chu; Leetsch C. Hsu (Discret. Math., 1993)

On certain summation problems and generalizations of Eulerian polynomials and numbers. - Leetsch C. Hsu; Peter Jau-Shyong Shiue (Discret. Math., 1999)

Convergence of the summation formulas constructed by using a symbolic operator approach. - Tian-Xiao He; Leetsch C. Hsu; Peter Jau-Shyong Shiue (Comput. Math. Appl., 2006)

Symbolization of generating functions; an application of the Mullin-Rota theory of binomial enumeration. - Tian-Xiao He; Leetsch C. Hsu; Peter Jau-Shyong Shiue (Comput. Math. Appl., 2007)

The Sheffer group and the Riordan group. - Tian-Xiao He; Leetsch C. Hsu; Peter Jau-Shyong Shiue (Discret. Appl. Math., 2007)

On a Class of Combinatorial Sums Involving Generalized Factorials. - Wun-Seng Chou; Leetsch C. Hsu; Peter J.-S. Shiue (Int. J. Math. Math. Sci., 2007)

A symbolic operator approach to several summation formulas for power series II. - Tian-Xiao He; Leetsch C. Hsu; Peter Jau-Shyong Shiue (Discret. Math., 2008)

A pair of operator summation formulas and their applications. - Tian-Xiao He; Leetsch C. Hsu; Dongsheng Yin (Comput. Math. Appl., 2009)

On an extension of Riordan array and its application in the construction of convolution-type and Abel-type identities. - Tian-Xiao He; Leetsch C. Hsu; Xing Ron Ma (Eur. J. Comb., 2014)

Some Combinatorial Series and Reciprocal Relations Involving Multifold Convolutions. - Leetsch C. Hsu; Xin-Rong Ma (Integers, 2014)