@ARTICLE{belbruno2013geometry,
  author = {Belbruno, E. and Gidea, M. and Topputo, F.},
  title = {{Geometry of Weak Stability Boundaries}},
  journal = {Qualitative Theory of Dynamical Systems},
  year = {2013},
  volume = {12},
  pages = {53-66},
  number = {1},
  doi = {10.1007/s12346-012-0069-x}
}