The Total Least Squares Problem: Computational Aspects and Analysis/Solving Least Squares Problems/Theoria Combinatiotoris Observationum Erroribus Minimus Obnoxiae. Pars Prior. Pars Posterior. Supplementum. Theory of the Combination of Observations Least Subject to Errors. Part One, Part Two, Supplement.

Reviews three books about least squares problems. `The Total Least Squares Problem: Computational Aspects and Analysis,' by Sabine Van Huffel and Joos Vandewalle; `Solving Least Squares Problems,' by Charles L. Lawson and Richard J. Hanson; `Theory of the Combination of Observations Least Subject to Errors. Part One, Part Two, Supplement,' by Carl Friedrich Gauss.