On SIP algorithms for minimizing the mean-risk function in the multi period single source problem under uncertainty Egileak: A. Alonso-Ayuso, L.F. Escudero, C. Pizarro Urtea: 2009 Aldizkaria: Annals of Operations Research Informazio gehigarria http://link.springer.com/article/10.1007%2Fs10479-008-0411-5