1. “Invariant Imbedding Applied to Eigenvalue Problems in Mechanics,”;Shoemaker;J. Appl. Mech.,1964
2. “Invariant Imbedding and its Application to Ordinary Differential Equations,”;Scott,1973
3. “Invariant Imbedding Riccati Transformations and Eigenvalue Problems,”;Wilks;J. Inst. Math. and Applics.,1976
4. Sloan, D. M. and Bramley, J. S., “Note on the Riccati Method for Differential Eigenvalue Problems,” submitted for publication.
5. “On the Numerical Solution of Difficult Eigenvalue Problems,”;Davey;J. Comp. Physics,1977