@inbook {IOPORT.05494061,
    author       = {van Hoeij, Mark},
    title        = {Solving third order linear differential equations in terms of second order equations.},
    year         = {2007},
    booktitle    = {ISSAC 2007. Proceedings of the 20th international symposium on symbolic and algebraic computation (ISSAC 2007), Waterloo, ON, Canada, July 29--August 1, 2007.},
    isbn         = {978-1-59593-743-8},
    pages        = {355-360},
    publisher    = {New York, NY: Association for Computing Machinery (ACM)},
    abstract     = {Summary: This paper presents a simplified version of a method by Michael Singer for reducing a third order linear ode to a second order linear ode whenever possible. An implementation is available as well.},
    identifier   = {05494061},
}