1. Gröbner Bases;Becker,1993
2. Polynomial Automorphisms and the Jacobian Conjecture;Van den Essen,2000
3. Free Rings and their Relations;Cohn,1971
4. Lectures on Curves on Rational and Unirational Surfaces, Tata Institute of Fundamental Research;Miyanishi,1978
5. On Weitzenböck’s theorem in positive characteristic;Fauntleroy;Proc. Amer. Math. Soc.,1977