1.
Jorge Nocedal & Stephen Wright. Numerical Optimization (Springer Series in Operations Research and Financial Engineering). (Springer).
2.
Wright, Stephen J. Primal-dual interior-point methods. (Society for Industrial and Applied Mathematics, 1997).
3.
Boyd, S. P. & Vandenberghe, L. Convex optimization. (Cambridge University Press, 2004). doi:10.1017/CBO9780511804441.
4.
EE364a: Lecture slides. http://stanford.edu/class/ee364a/lectures.html.
5.
EE364b: Lecture slides. http://stanford.edu/class/ee364b/lectures.html.
6.
Section C Oxford course. http://www.numerical.rl.ac.uk/people/nimg/oupartc/index.shtml.