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York’s solution to the problem of linear least-squares fits with errors in both coordinates D. York, Can. J. Phys. 44, 1079 (1966) is shown to be exact and not subject to the erroneous results that attempts to modify standard least-squares algorithms can produce. Detailed examples of the use of York’s method are given; a fortran implementation suitable for use on personal computers is available to interested parties.
B. Cameron Reed (1989) studied this question.