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)

The Classical Theory of Invariants and Object Recognition Using Algebraic Curve and Surfaces. - Hakan Çivi; Colin Christopher; Aytül Erçil (J. Math. Imaging Vis., 2003)