@article{BangHoviSprinz2012,
  author    = {Guri Bang and Jon Hovi and Detlef F. Sprinz},
  title     = {US presidents and the failure to ratify multilateral environmental agreements},
  journal   = {Climate policy},
  volume    = {12},
  number    = {6},
  pages     = {755 -- 763},
  doi       = {10.1080/14693062.2012.699788},
  year      = {2012},
}