L-Curve and Curvature Bounds for Tikhonov Regularization. - Daniela Calvetti; Lothar Reichel; A. Shuibi (Numer. Algorithms, 2004)

Tikhonov regularization of large symmetric problems. - Daniela Calvetti; Lothar Reichel; A. Shuibi (Numer. Linear Algebra Appl., 2005)