1. Dart, S.A., Ellison, R.J., Feiler, P.H., Habermann, A.N.: Software development environments. Computer 20, 11, 18–28 (1987)
2. Field, A.J., Harrison, P.E.: Functional programming. Reading: Addison-Wesley 1988
3. Hudak, P.: Conception, evolution and application of functional programming languages. ACM Computing Surveys 21, 3, 354–411 (1989)
4. Perry, N.: Hope+. Technical report IC/FPR/LANG/2.5.1/7, Dept. of Computing, Imperial College, University of London, 1989
5. Reps, T., Teitelbaum, T.: Language processing in program editors. Computer 20, 11, 29–40 (1987)