M. J. D. Powell A View of Unconstrained Minimization Algorithms that Do Not Require Derivatives. [Citation Graph (0, 0)][DBLP] ACM Trans. Math. Softw., 1975, v:1, n:2, pp:97-107 [Journal]
Lawrence L. Barinka Some Experience with Constructing, Testing, and Certifying a Standard Mathematical Subroutine Library. [Citation Graph (0, 0)][DBLP] ACM Trans. Math. Softw., 1975, v:1, n:2, pp:165-177 [Journal]