@article{Gutiérrez:78264,
      author        = "Gutiérrez, F. and Zarroca, M. and Linares, R. and Roqué,
                       C. and Carbonel, D. and Guerrero, J. and McCalpin, J.P. and
                       Comas, X. and Cooper, A.H.",
      title         = "{Identifying the boundaries of sinkholes and subsidence
                       areas via trenching and establishing setback distances}",
      year          = "2018",
}