1. Hopf Algebras;Abe,1980
2. The Jacobian conjecture, reduction of degree and formal expansion of the inverse;Bass;Bull. Amer. Math. Soc.,1982
3. Noncommutative symmetric functions. III. Deformations of Cauchy and convolution algebras;Duchamp;Discrete Math. Theor. Comput. Sci.,1997
4. Noncommutative symmetric functions. VI. Free quasi-symmetric functions and related algebras;Duchamp;Internat. J. Algebra Comput.,2002
5. Locally finite and locally nilpotent derivations with applications to polynomial flows and polynomial morphisms;van den Essen;Proc. Amer. Math. Soc.,1992