Cellular Automaton Public-Key Cryptosystem. - Puhua Guan (Complex Syst., 1987)

Upper Bound on the Number of Cycles in Border-Decisive Cellular Automata. - Puhua Guan; Yu He (Complex Syst., 1987)

A spanning tree of the 2m-dimensional hypercube with maximum number of degree-preserving vertices. - Sul-Young Choi; Puhua Guan (Discret. Math., 1993)

Construction of a family of graphs with a small induced proper subgraph with minimum degree 3. - Sul-Young Choi; Puhua Guan (Discret. Math., 2007)

On systems of linear and diagonal equation of degree pi+1 over finite fields of characteristic p. - Francis N. Castro; Ivelisse Rubio; Puhua Guan; Raúl Figueroa (Finite Fields Their Appl., 2008)