@book{Oechsner2021,
  author    = {Andreas {\"O}chsner},
  title     = {Structural Mechanics with a Pen},
  series    = {A Guide to Solve Finite Difference Problems},
  isbn      = {978-3-030-65891-5},
  doi       = {10.1007/978-3-030-65892-2},
  year      = {2021},
}