Harold L. Ossher "Grids: A new program structuring mechanism based on layered graphs"

[POPL 1984] (1984) [ACM SIGACT-SIGPLAN] Proceedings of the 11th ACM SIGACT-SIGPLAN Symposium on Principles of Programming Languages POPL 84 1984 , Salt Lake City, Utah, United States  

Languages mentioned Fable {1983}