The Scratchpad II Computer Algebra Language and System. - Robert S. Sutor (European Conference on Computer Algebra (2), 1985)

Scratchpad II: An Abstract Datatype System for Mathematical Computation. - Richard D. Jenks; Robert S. Sutor; Stephen M. Watt (Trends in Computer Algebra, 1987)

The type inference and coercion facilities in the scratchpad II interpreter. - Robert S. Sutor; Richard D. Jenks (PLDI, 1987)

A First Report on the A# Compiler. - Stephen M. Watt; Peter A. Broadbery; Samuel S. Dooley; Pietro Iglio; Scott C. Morrison; Jonathan M. Steinbach; Robert S. Sutor (ISSAC, 1994)

A report on OpenMath: a protocol for the exchange of mathematical information. - John Abbott; Angel Díaz; Robert S. Sutor (SIGSAM Bull., 1996)