@ARTICLE\{IMM2002-0453,
    author       = "D. Calvetti and P. C. Hansen and L. Reichel",
    title        = "L-Curve Curvature Bounds via Lanczos Bidiagonalization",
    year         = "2002",
    pages        = "134-149",
    journal      = "Electronic Transactions on Numerical Analysis",
    volume       = "14",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/453-full.html"
}