Least Squares Programs-A Look at the Square Root Procedure
R. Kopitzke, T. J. Boardman, Franklin A. Graybill · The American Statistician · 1975
Summary Various algorithms are in use on computers to solve least squares problems. Apparently very few programs use the square root procedure. In this paper, results from programs based on the square root procedure are compared with results based on some other algorithms. Remarkably good results are obtained using the square root procedure.