@inproceedings{BoChLeSaSc12,
    author      = {Bostan, Alin and Chowdhury, Muhammad F. I. and Lebreton,
  Romain and Salvy, Bruno and Schost, {\'E}ric},
    title       = {Power Series Solutions of Singular (q)-Differential
  Equations},
    booktitle   = {ISSAC '12: Proceedings of the twenty-fifth International
  Symposium on Symbolic and Algebraic Computation},
    year        = {2012},
    editor      = {van Hoeij, Mark and Van der Hoeven, Joris},
    pages       = {107--114},
    arxiv       = {abs/1205.3414},
    abstract    = {We provide algorithms computing power series solutions of a
  large class of differential or $q$-differential equations or systems. Their
  number of arithmetic operations grows linearly with the precision, up to
  logarithmic terms.},
}