Smooth interpolation of orientations with angular velocity constraints using quaternions. - Alan H. Barr; Bena L. Currin; Steven Gabriel; John F. Hughes (SIGGRAPH, 1992)

Interval methods for multi-point collisions between time-dependent curved surfaces. - John M. Snyder; Adam R. Woodbury; Kurt W. Fleischer; Bena L. Currin; Alan H. Barr (SIGGRAPH, 1993)

Cellular texture generation. - Kurt W. Fleischer; David H. Laidlaw; Bena L. Currin; Alan H. Barr (SIGGRAPH, 1995)