- PSPP Authors
-
- * Ben Pfaff wrote most of the program and the manual.
- * John Williams wrote the T-TEST procedure.
- * 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.
+* Ben Pfaff wrote most of the program and the manual.
+
+* 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.
+
+* Jason Stover contributed statistical and numerical
+functionality, including lib/gslextras. (Jason is also an
+important contributor to libgsl used by PSPP.)