3L fitting of higher degree implicit polynomials. - Zhibin Lei; Michael M. Blane; David B. Cooper (WACV, 1996)

The 3L Algorithm for Fitting Implicit Polynomial Curves and Surfaces to Data. - Michael M. Blane; Zhibin Lei; Hakan Çivi; David B. Cooper (IEEE Trans. Pattern Anal. Mach. Intell., 2000)