1. Complete models of differential fields;Blum;Trans. Amer. Math. Soc.,1969
2. The general solution of a first order differential polynomial;Cohn;Proc. Amer. Math. Soc.,1976
3. Rational approximation to solutions of algebraic differential equations;Kolchin;Proc. Amer. Math. Soc.,1959
4. “Differential Algebra and Algebraic Groups.”;Kolchin,1973
5. Jacobi's bound for the order of systems of first order differential equations;Lando;Trans. Amer. Math. Soc.,1970