@article{7458,
  author = {R. Mickens},
  title = {A regular perturbation technique for non-linearly coupled oscillators in resonance},
  year = {1982},
  journal = {Journal of Sound and Vibration},
  volume = {81},
  pages = {307-310},
  month = {Jan-03-1982},
  issn = {0022460X},
  url = {http://linkinghub.elsevier.com/retrieve/pii/0022460X82902139},
  doi = {10.1016/0022-460X(82)90213-9},
}