@misc{indiciae2a68ab2be841,
  title = {Calibration of the DRASTIC ground water vulnerability mapping method},
  author = {M.G. Rupert},
  year = {2005},
  doi = {10.1111/j.1745-6584.2001.tb02350.x},
  url = {https://pubs.usgs.gov/publication/70023741},
  note = {Source identifier: 70023741}
}