1. O’Leary, D.P. and Rust, B.W., SIAM J. Sci. Stat. Comput., 1986, vol. 7, p. 473.
2. Rust, B.W., Nonnegatively constrained confidence interval estimation for ill-posed problems, in: Computing Science and Statistics. Statistics of many parameter: curves, images, spatial models. Proceedings of the 22 nd Symposium on the Interface, East Lansing, MI, May 16—19, 1990, p. 63.
3. Rust, B.W. and O’Leary, D.P., J. Comput. Graphical Statistics, 1994, vol. 3, p. 67.
4. Lawson, C.L. and Hanson, R.J., SIAM’s Classics in Applied Mathematics Series, vol. 15: Solving Least Squares Problems, Philadelphia, 1995 (p. 161, algorithm 23.10).
5. Bauer, F. and Lukas, M.A., Math. Comput. Simul., 2011, vol. 81, p.1795.