1Boggs, P. T., Byrd, R. H., and Schnabel, R. B. 1987. A stable and effcient algorithm for nonlinear orthogonal distance regression. SIAM J. Sci. Stat. Comput. 8, 6 november 1987),1052-1078.

2Boggs, P. T., Donaldson, J. R., Byrd, R. H., and Schnabel, R. B. 1989. Algorithm 676:ODRPACK: software for weighted orthogonal distance regression. ACM Trans. on Math. Soft.15, 4 (December 1989), 348 -364.

3Boggs, P. T., Byrd, R. H., Rogers, J. E., and Schnabel, R. B. 1992. User's Reference Guide for ODRPACK Version 2.01: software for Weighted Orthogonal Distance Regression. Center for Computing and Applied Mathematics, U.S. Department of Commerce, Gaithersburg, MD.

年代有点旧，也好像是书籍不是文献，劳烦大家帮我找找，谢啦！