"Cyclic coordinate descent in a class of bang-singular-bang problems"
L. Bayón, P. Fortuny Ayuso, J. A. Otero, P. M. Suárez, C. Tasis,
Journal of Computational and Applied Mathematics, Special Issue on Mathematics and Modeling.
DOI: 10.1016/j.cam.2015.03.003
URL: http://www.sciencedirect.com/science/article/pii/S0377042715001491