@article{GaciZaourarBriqueuetal.2011,
  author    = {Said Gaci and Naima Zaourar and Louis Briqueu and Matthias Holschneider},
  title     = {Regularity analysis applied to sonic logs data a case study from KTB borehole site},
  journal   = {Arabian journal of geosciences},
  volume    = {4},
  number    = {1-2},
  pages     = {221 -- 227},
  doi       = {10.1007/s12517-010-0129-y},
  year      = {2011},
}