Analysis of the Parenthesis Structure of Algol 68. - Paul Branquart; Johan Lewi; Jean-Pierre Cardinael (ALGOL 68 Implementation, 1970)

A Context-Free Syntax of ALGOL 68. - Paul Branquart; Jean-Pierre Cardinael; Jean-Paul Delescaille; Johan Lewi (Inf. Process. Lett., 1972)

A simple translation automaton allowing the generation of optimized code. - Paul Branquart; Jean-Pierre Cardinael; Johan Lewi; Jean-Paul Delescaille; Michael Van Begin (Methods of Algorithmic Language Implementation, 1975)

An Optimized Translation Process and Its Application to ALGOL 68 - Paul Branquart; Jean-Pierre Cardinael; Johan Lewi; Jean-Paul Delescaille; Michael Van Begin (Springer, 1976)