Authors of GNU MDK.
See also the files THANKS and ChangeLog.

Jose A. Ortega Ruiz designed and implemented mdk.

Pieter E. J. Pareit designed, implemented and documented
mixal-mode.el, and fixed bugs in other mdk code.

Philip E. King designed and implemented mixvm.el.

Michael Scholz wrote the German translation po/de.po.

Sergey Poznyakoff provided patches to mixlib/mix_scanner.l improving
MIXAL compliance.