- PSPP Authors
-
- * Ben Pfaff wrote most of the program and the manual.
+We wish to thank current active contributors to PSPP:
- * John Williams originally wrote the T-TEST procedure, which was
- subsequently re-written by John Darrington
+* Ben Pfaff wrote the initial program and manual, which comprises the
+majority of the current code. Ben is the current maintainer and
+continues to contribute.
- * Jim Van Zandt translated the `julcal' date calculation package
- into C from code written by Michael Covington, which was based on
- formulae by Jean Meeus.
+* John Darrington wrote the graphical user interface, and the T-TEST,
+ONEWAY, EXAMINE, RANK and NPAR TESTS commands, implemented support
+for long variable names and made numerous revisions to other modules.
- * John Darrington wrote the T-TEST and ONEWAY procedures, and made
- numerous revisions to other modules.
+* Jason Stover contributed statistical and numerical functionality,
+including lib/gslextras. Jason is also an important contributor to
+GSL, used by PSPP.
+
+We also thank past contributors:
+
+* John Williams wrote an initial draft of the T-TEST procedure.
+
+* Michael Kiefte contributed bug fixes and other enhancements.
+
+* Patrick Kobly contributed bug fixes and other enhancements.