@article{Staat2021,
  author    = {Manfred Staat},
  title     = {An extension strain type Mohr-Coulomb criterion},
  journal   = {Rock mechanics and rock engineering},
  volume    = {54},
  number    = {12},
  pages     = {6207 -- 6233},
  doi       = {10.1007/s00603-021-02608-7},
  year      = {2021},
}