@ARTICLE{belbruno2010weak,
  author = {Belbruno, E. and Gidea, M. and Topputo, F.},
  title = {{Weak Stability Boundary and Invariant Manifolds}},
  journal = {SIAM Journal on Applied Dynamical Systems},
  year = {2010},
  volume = {9},
  pages = {1061--1089},
  number = {3},
  doi = {10.1137/090780638}
}