@article{Pak14c,
  title = {Topological Manifolds},
  author = {Karol Pak},
  year = {2014},
  url = {http://www.degruyter.com/view/j/forma.2014.22.issue-2/forma-2014-0019/forma-2014-0019.xml},
  researchr = {https://researchr.org/publication/Pak14c},
  cites = {0},
  citedby = {0},
  journal = {Formalized Mathematics},
  volume = {22},
  number = {2},
  pages = {179-186},
}