@article{levermann_schewe09,
  title   = {Basic mechanism for abrupt monsoon transitions},
  author  = {A. Levermann and J. Schewe and V. Petoukhov and H. Held},
  journal = {Proceedings of the National Academy of Sciences},
  year    = {2009},
  vol     = {106},
  number  = {49},
  pages   = {20572-20577}}