Fast Algorithms to Search for the Rational Solutions of Linear Differential Equations with Polynomial Coefficients.

Sergei A. Abramov K. Yu. Kvashenko Fast Algorithms to Search for the Rational Solutions of Linear Differential Equations with Polynomial Coefficients. 267-270 1991 conf/issac/1991 ISSAC http://doi.acm.org/10.1145/120694.120735 db/conf/issac/issac91.html#AbramovK91