1. MATHLAB: a program for on-line assistance in symbolic computations;Engelman,1965
2. PL/I FORMAC Interpreter;Tobey;User's Reference Manual. IBM contributed program library, 360 D03.3004,1967
3. REDUCE 2 User's Manual;Hearn;Stanford Artificial Intelligence Project,1970
4. Hydrodynamics;Lamb,1932