Fitting conic sections to “very scattered” data: An iterative refinement of the bookstein algorithm

Bookstein, 1979, Fitting conic sections to scattered data, 9, 56 Gnanadesikan, 1977 Golub, 1970, Stationary values of the ratio of quadratic forms subject to linear constraints, Z. Angew. Math. Phys., 21, 318, 10.1007/BF01627939 Ramsay, 1977, A comparative study of several robust estimates of slope, intercept, and scale in linear regression, J. Amer. Statist. Assoc., 72, 608, 10.2307/2286228 Sampson, 1980, Statistical Analysis of Shape with Conic Sections and Elliptical Distributions on a Hypersphere Isaacson, 1966