Jacobian criteria for complete intersections. The graded case. Luchezar L. Avramov, Jürgen Herzog (1994) Inventiones mathematicae
Jung's type theorem for polynomial transformations of ℂ² Sławomir Kołodziej (1991) Annales Polonici Mathematici We prove that among counterexamples to the Jacobian Conjecture, if there are any, we can find one of lowest degree, the coordinates of which have the form x m y n + terms of degree < m+n.