A. An, and T. Wakayama. Fifth International Conference on Electronic Publishing, page 361--372. Darmstadt, Germany, Origination, Dissemination, and Design (EPODD) EP '94, (1994)
J. Paakki. Conference record of POPL '94, 21st ACM SIGPLAN-SIGACT Symposium
on Principles of Programming Languages: papers presented at the Symposium:
Portland, Oregon, January 17--21, 1994, page 361--374. New York, NY, USA, ACM Press, (1994)
B. Baum, and P. Forbig. Programming Language Implementation and Logic Programming (PLILP
'91), volume 528 of Lect. Notes in Comp. Sci., page 427--428. (1991)system demonstration.
M. Rosendahl. Attribute Grammars and their Applications (WAGA), volume 461 of Lecture Notes in Computer Science, Springer-Verlag, New York--Heidelberg--Berlin, Paris.(September 1990)