@article{rs2002,
    author  = "Marielba Rojas and Danny C. Sorensen",
    title  = "A trust-region approach to the regularization of large-scale discrete forms of ill-posed problems",
    journal = "SIAM J. Sci. Comput.",
    volume  = 23,
    number  = 6,
    pages   = "1843-1861",
    year    = 2002
}