1. Olivier Cormier, On Liouvillian solutions of linear differential equations of order 4 and 5, in ISSAC '01: Proceedings of the 2001 International Symposium on Symbolic and Algebraic Computation, ACM, New York, 2001, pp. 93–100 (electronic).[MR]
  2. Olivier Cormier, Michael F. Singer, and Felix Ulmer, Computing the Galois group of a polynomial using linear differential equations, in Proceedings of the 2000 International Symposium on Symbolic and Algebraic Computation (St. Andrews), ACM, New York, 2000, pp. 78–85 (electronic).[MR]