@misc{indiciae9abc1e806fd1,
  title = {Microcomputer-based version of SIPT; a program for the interpretation of seismic-refraction data},
  author = {F.P. Haeni and Deborah G. Grantham and Karl Ellefsen},
  year = {1987},
  doi = {10.3133/ofr87103a},
  url = {https://pubs.usgs.gov/publication/ofr87103A},
  note = {Source identifier: ofr87103A}
}