James Baldwin Domingo
Transition diagrams as a specification of the MUMPS language: revised and evaluated for the 1990 standard
Dissertation
University of California at Davis CA (1992)
Anthony I. Wasserman, David D. Sherertz, M.L. Kersten, R.P. van de Riet and M.D. Dippe
Revised Report of the Programming Language PLAIN
ACM SIGPLAN Notes, volume 16, number 5 (1981), pp59-80
Joan Zimmerman and Thomas C. Salander
Introduction to standard MUMPS, revised
A guide for the novice / original
MUMPS Users' Group, College Park MD (1984)