A Lower Bound for the Permanent on Un(k, k). - Darald J. Hartfiel; J. W. Crosby (J. Comb. Theory A, 1972)

The chainable matrix, a special combinatorial matrix. - Darald J. Hartfiel; Carlton J. Maxson (Discret. Math., 1975)

A note on two conjectures of geller. - Darald J. Hartfiel; Carlton J. Maxson (Discret. Math., 1976)

Algebraic models for two-edge-connected graphs. - Darald J. Hartfiel; Carlton J. Maxson (Discret. Math., 1976)

A Semigroup Characterization of a Linearly Realisable Automaton over GF(p). - Darald J. Hartfiel; Carlton J. Maxson (J. Comput. Syst. Sci., 1977)

On optimizing certain nonlinear convex functions which are partially defined by a simulation process. - Darald J. Hartfiel; Guy L. Curry (Math. Program., 1977)

Groups which are isomorphic to a semigroup of a linear nonsingular subautomaton. - Darald J. Hartfiel; Carlton J. Maxson (Discret. Math., 1978)

On a definition of connected sets of a matroid. - Darald J. Hartfiel; Carlton J. Maxson (J. Comb. Theory B, 1978)

The construction and decomposition of patterns induced by a positive cone of functions. - Darald J. Hartfiel; Carlton J. Maxson (Discret. Math., 1981)

On optimizing functions which are defined in part by an approximation process. - Darald J. Hartfiel; Guy L. Curry (Math. Program., 1981)

Stochastic eigenvectors for qualitative stochastic matrices. - Darald J. Hartfiel (Discret. Math., 1983)

Eigenvector Slicing of the Nonnegative Matrices. - Darald J. Hartfiel (SIAM J. Matrix Anal. Appl., 1998)

Distribution of Entries in a Substochastic Matrix Having Eigenvalues Near 1. - Darald J. Hartfiel (SIAM J. Matrix Anal. Appl., 2000)

Boxed iterations. - Darald J. Hartfiel (Appl. Math. Comput., 2003)