1. Variational Methods in Mathematical Physics, Macmillan, New York, 1964.
2. ‘Continuous finite’, Institute of Engineering, National University of Mexico, Rep No E-14 (1975).
3. The Algebraic Eigenvalue Problem, Clarendon Press, Oxford, 1965.
4. Method of particular solutions for linear, two-point boundary-value problems
5. ON THE FUNDAMENTAL EQUATIONS OF INVARIANT IMBEDDING, I