@book{ZangStephansson2010,
  author    = {Arno Zang and Ove Stephansson},
  title     = {Stress field of the earth's crust},
  isbn      = {978-1-402-08443-0},
  doi       = {10.1007/978-1-4020-8444-7},
  year      = {2010},
}