The procedures in this book were implemented by the following members of the development staff. Program development includes design, programming, debugging, support, and documentation. In the following list, the names of the developers who currently provide primary support are listed first; other developers and previous developers are also listed.

HPGENSELECT	Gordon Johnston
HPLMIXED	Tianlin Wang, Biruk Gebramariam
HPLOGISTIC	Robert E. Derr, Oliver Schabenberger
HPNLMOD	Marc Kessler, Oliver Schabenberger
HPREG	Robert Cohen
HPSPLIT	Joseph Pingenot
High-performance computing foundation	Steve E. Krueger
High-performance analytics foundation	Robert Cohen, Georges H. Guirguis, Trevor Kearney, Richard Knight, Gang Meng, Oliver Schabenberger, Charles Shorb, Tom P. Weber
Numerical routines	Georges H. Guirguis

The following people contribute with their leadership and support: Chris Bailey, Tanya Balan, David Pope, Oliver Schabenberger, Renee Sciortino.