@misc{indiciae643d039705c9,
  title = {International river basins of the world},
  author = {Aaron T. Wolf and Jeffrey A. Natharius and Jeffrey J. Danielson and Brian S. Ward and Jan K. Pender},
  year = {1999},
  doi = {10.1080/07900629948682},
  url = {https://pubs.usgs.gov/publication/70187660},
  note = {Source identifier: 70187660}
}