On a paper of Lang and Maslamani

Let k be a field of characteristic 0, and let f : kⁿ→kⁿ be a polynomial map with components of the form f_i=x_i+h_i, where the h_i are monomials. If the Jacobian determinant of the map f is a nonzero constant, then f is a tame automorphism. If, in addition, each h_i is either constant or of degree 2 or more, then f is linearly triangularizable.