1. Structure and foundations of a large multitask CAD system;Abel,1975
2. The teaching of computer aided design of feedback control systems;Allen;Int. J. Math. Educ. Sci. Techn.,1974
3. An integrated suite of programs for the teaching of computer aided design of feedback control systems;Allen,1975
4. An integrated suite of programs for the teaching of computer-aided design of feedback control systems;Allen,1977
5. On the analysis and design of linear systems by means of a desk calculator;Aracil,1977