## References and Further Reading

The original version of the Hybrid method is described in the following articles by Powell,

- M.J.D. Powell, "A Hybrid Method for Nonlinear Equations" (Chap 6, p 87-114) and "A Fortran Subroutine for Solving systems of Nonlinear Algebraic Equations" (Chap 7, p 115-161), in Numerical Methods for Nonlinear Algebraic Equations, P. Rabinowitz, editor. Gordon and Breach, 1970.

The following papers are also relevant to the algorithms described in this section,

- J.J. Mor'e, M.Y. Cosnard, "Numerical Solution of Nonlinear Equations", ACM Transactions on Mathematical Software, Vol 5, No 1, (1979), p 64-85
- C.G. Broyden, "A Class of Methods for Solving Nonlinear Simultaneous Equations", Mathematics of Computation, Vol 19 (1965), p 577-593
- J.J. Mor'e, B.S. Garbow, K.E. Hillstrom, "Testing Unconstrained Optimization Software", ACM Transactions on Mathematical Software, Vol 7, No 1 (1981), p 17-41