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.
+
+ * John Williams originally wrote the T-TEST procedure, which was
+ subsequently re-written by John Darrington.
+
+ * John Darrington wrote the T-TEST, ONEWAY, and EXAMINE
+ procedures, 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.)