1. Numerical methods for solving linear least square problems;Golub;Numer. Math.,1965
2. Linear least square solutions by Householder transformations;Businger;Num. Math.,1965
3. Solving systems of linear equations with a positive definite symmetric, possibly ill-conditioned matrix;Riley;M.T.A.C.,1955
4. A simple algorithm for computing the generalized inverse of a matrix;Rust;Comm. A.C.M.,1966
5. A method of computing least squares estimators that keep up with the data;Albert;J. S.I.A.M. Control, Ser. A,1966