@article{BienerSasse2006,
  author    = {Ernst Biener and T. Sasse},
  title     = {Quality improvements in the construction of multilayer covers},
  journal   = {G{\´e}ologie et confinement des d{\´e}chets toxiques : actes du symposium international, 8 - 11 juin 1993 / GEOCONFINE 93, Montpellier, France. R{\´e}d. Marcel Arnould},
  pages     = {309 -- 312},
  year      = {2006},
}