1. N. Wirth andH. Weber, Euler—a generalization ofAlgol and its formal definition I,J. Assoc. Comput. Mach. 9 (1966), 13–25.
2. N. Wirth, PL360, a programming language for the 360 computers,J. Assoc. Comput. Mach. 15 (1968), 37–74.
3. R. P. Leinius,Error Detection and Recovery for Syntax Directed Compiler Systems, Ph.D. Thesis, University of Wisconsin, Madison, Wisconsin, 1970.
4. R. W. Floyd, Syntactic analysis and operator precedence,J. Assoc. Comput. Mach. 10 (1963), 316–333.
5. J. R. Bell, A new method for determining linear precedence functions for precedence grammars,Comm. Assoc. Comput. Mach. 12 (1969), 567–569.