@misc{indiciae2c982a6b41ed,
  title = {Description and testing of three moisture sensors for measuring surface wetness on carbonate building stones},
  author = {R.B. See and M.M. Reddy and R. G. Martin},
  year = {1987},
  doi = {10.3133/wri874177},
  url = {https://pubs.usgs.gov/publication/wri874177},
  note = {Source identifier: wri874177}
}