Bailey, M. J.; Barnett, M. P.; Burleson, P. B. "Symbol manipulation in FORTRAN: SASP I subroutines" pp339-346

[ACM] (1964) [ACM] CACM 7(06) June 1964  

Languages mentioned SASP I {1972} Syntactically Analyzed String Processor SHADOW IV {1963} Syntax-directed compiler