1. Thomas Binder, Two Codazzi problems for relative surfaces, PhD thesis, Fak. II, Inst. f. Math., TU Berlin, 2002, Shaker Verlag, Aachen, ISBN 3-8265-9938-1, 2002.
2. Relative Tchebychev hypersurfaces which are also translation hypersurfaces;Binder;Hokkaido Math. J.,2009
3. Vorlesungen über Differentialgeometrie, vol. II;Blaschke,1923
4. On the Pick invariant, the affine mean curvature and the Gauss curvature of affine surfaces;Dillen;Results Math.,1991
5. Characterization of affine ruled surfaces;Jelonek;Glasg. Math. J.,1997