By Gerd Brunner
By E. J. Karjalainen
By McGinity James (University of Texas at Austin, Austin, TX, USA), Linda A. Felton (University of New Mexico, Albuquerque
By Bengt Ljungqvist, Berit Reinmuller
By Neal Layton
By Michael Lummis, Christopher Burton, Kathleen Pleet, BradyGames
By John Emsley
By Michael Glazer, Gerald Burns (IBM Thomas J. Watson Research Center, Yorktown Heights, New York)
By Bob V. Conger (University of Tennessee, Knoxville, Tennessee, USA)
By R. J. Roberts, Ray Rowe