1. Rati Chandra. Conjugate Gradient Methods for Partial Differential Equations. Ph.D. Thesis, Department of Computer Science, Yale University, 1978. Also available as Research Report #129.
2. Paul Concus and Gene H. Golub. A generalized conjugate gradient method for nonsymmetric systems of linear equations. In R. Glowinski and J. L. Lions, Editors, Lecture Notes in Economics and Mathematical Systems, Volume 134, Springer Verlag, 1976, pp. 56–65.
3. R. S. Dembo, S. C. Eisenstat, and T. Steihaug. Inexact Newton methods. SIAM Journal on Numerical Analysis 19(2):400–408 (1982).
4. Stanley C. Eisenstat. A Note on the Generalized Conjugate Gradient Method. Technical Report #228, Department of Computer Science, Yale University, 1982. To appear in SIAM Journal on Numerical Analysis.
5. Howard C. Elman. Iterative Methods for Large, Sparse, Nonsymmetric Systems of Linear Equations. Ph.D. Thesis, Department of Computer Science, Yale University, 1982. Also available as Technical Report #229.