A. Albert,Regression and the Moore-Penrose Pseudoinverse, Academic Press, New York, 1972.
A. Ben-Israel, T. N. E. Greville,Generalized Inverses: Theory and Applications, John Wiley & Sons, New York, 1974.
T. L. Boullion, P. L. Odell,Generalized Inverse Matrices, Wiley-Interscience, New York, 1971.
L. Eldén,A note on weighted pseudoinverses with application to the regularization of Fredholm integral equations of the first kind, Department of Mathematics, Linköping University, Report LiTH-MATR-1975-11, 1975.
L. Eldén,Algorithms for the regularization of ill-conditioned least squares problems, BIT17 (1977), 134–145.
L. Eldén,Perturbation theory for the least squares problem with linear equality constraints, SIAM J. Num. Anal.17 (1980), pp. 338–350.
G. H. Golub,Some modified eigenvalue problems, SIAM Review 15 (1973), pp. 318–334.
C. L. Lawson, R. J. Hanson,Solving Least Squares Problems, Prentice-Hall, Englewood Cliffs, 1974.
D. G. Luenberger,Introduction to Linear and Nonlinear Programming, Addison-Wesley, Reading Mass., 1973.
K. Miller,Least squares methods for ill-posed problems with a prescribed bound, SIAM J. Math. Anal.1 (1970), pp. 52–74.
S. K. Mitra, C. R. Rao,Projections under seminorms and generalized Moore Penrose inverses, Lin. Alg. Appl.9 (1974), pp. 155–167.
S. K. Mitra,Optimal inverse of a matrix, Sankhya, Ser. A,37 (1975) pp. 550–563.
V. A. Morozov,Regularization Methods for the Solution of Improperly Posed Problems, Moscow University Press, Moscow, 1974 (Russian).
A. D. Poley,Connections between some results on the generalized least squares problem, Techn. Univ. Eindhoven, Dep. Math., TH-Report 81-WSK-01, 1981.
C. M. Price,The matrix pseudoinverse and minimal variance estimates, SIAM Review6 (1964), pp. 115–120.
C. R. Rao, S. K. Mitra,Generalized Inverse of Matrices and its Applications, John Wiley & Sons, New York, 1971.
V. F. Turchin,Selection of an ensemble of smooth functions for the solution of the inverse problem, Zh. Vychisl. Mat. Mat. Fiz.8 (1968), 230–238=USSR Comp. Math. Math. Phsy8 (1968), pp. 328–339.
C. F. Van Loan,Generalizing the singular value decomposition, SIAM J. Numer. Anal.13 (1976), pp. 76–83.
J. F. Ward,On a limit formula for weighted pseudoinverses, SIAM J. Appl. Math.33 (1977), pp. 34–38.
P.-Å Wedin,Notes on the constrained least squares problem. A new approach based on generalized inverses. Report UMINF - 75.79, Department of Numerical Analysis, Umeå University, 1979.