New spherical 4-designs. - Ronald H. Hardin; Neil J. A. Sloane (Discret. Math., 1992)

Expressing (a2 + b2 + c2 + d2)3 as a Sum of 23 Sixth Powers. - Ronald H. Hardin; Neil J. A. Sloane (J. Comb. Theory A, 1994)

Minimal-Energy Clusters of Hard Spheres. - Neil J. A. Sloane; Ronald H. Hardin; T. D. S. Duff; John H. Conway (Discret. Comput. Geom., 1995)

McLaren's Improved Snub Cube and Other New Spherical Designs in Three Dimensions. - Ronald H. Hardin; Neil J. A. Sloane (Discret. Comput. Geom., 1996)

Packing Lines, Planes, etc.: Packings in Grassmannian Spaces. - John H. Conway; Ronald H. Hardin; Neil J. A. Sloane (Exp. Math., 1996)

Editors' Note on Packing Lines, Planes, etc.: Packings in Grassmannian Spaces. - John H. Conway; Ronald H. Hardin; Neil J. A. Sloane (Exp. Math., 1997)

A New Heuristic for Bad Cycle Detection Using BDDs. - Ronald H. Hardin; Robert P. Kurshan; Sandeep K. Shukla; Moshe Y. Vardi (Formal Methods Syst. Des., 2001)

Spherical designs in four dimensions. - Neil J. A. Sloane; Ronald H. Hardin; Philippe Cara (ITW, 2003)