IPM was origionally developed and written by David Skinner <deskinner@lbl.gov>

Since version 0.810 significant coauthorship and contribution has been made by
Nick Wright <njwright@lbl.gov>
Noel Keen <ndkeen@lbl.gov>
Karl Fuerlinger <fuerling@eecs.berkeley.edu>
Sascha Hunold <sascha.hunold@imag.fr>

suggestions, contributions and collaborations welcome. 
