1. On the uniqueness of the coefficient ring in a polynomial ring;Abhyankar;J. Algebra,1972
2. On A1-forms;Asanuma;Mem. Fac. Educ. Toyama Univ.,2002
3. Affine surfaces with AK(S)=C;Bandman;Michigan Math. J.,2001
4. W. Danielewski, On the cancellation problem and automorphism groups of affine algebraic varieties, preprint, Warsaw, 1989
5. Polynomial Automorphisms and the Jacobian Conjecture;van den Essen,2000