@misc{indiciae882765108d51,
  title = {Pumping tests in nonuniform aquifers - The radially symmetric case},
  author = {J.J. Butler},
  year = {1988},
  doi = {10.1016/0022-1694(88)90025-x},
  url = {https://pubs.usgs.gov/publication/70013670},
  note = {Source identifier: 70013670}
}