Implementing the product automation formalism. - Frederick J. Portier (WSC, 1987)

Whitney Numbers of the Second Kind for the Star Poset. - Frederick J. Portier; Theresa P. Vaughan (Eur. J. Comb., 1990)

A Product Automaton Formalism for Hierarchical, Modular, Discrete Simulation. - Frederick J. Portier; Robert E. Haymond (INFORMS J. Comput., 1991)

Partitions of bi-partite numbers into at mostj parts. - Bruce M. Landman; Ezra A. Brown; Frederick J. Portier (Graphs Comb., 1992)