Manfred Dausmann, Guido Persch, Georg Winterstein: LIS as Object Code for an ADA-O-Compiler.

6th GI-Workshop: Programming Languages and Program (1980) 6th GI-Workshop: Programming Languages and Program Development, Informatik Fachberichte, Vol. 25, Springer-Verlag, 1980  

Languages mentioned LIS {1973} Langage Implementation Systeme - protoAda