@book{texbook,
  author = {Huusko, J.-M.},
  year = {2016},
  title = {Localisation of Linear Differential Equations in the Unit Disc by a Conformal Map},
  publisher = {Bull. Aust. Math. Soc. 93 (2016), 260--271}
  url = {https://journal.austms.org.au/ojs/index.php/Bulletin/article/view/9743}
}