@book{GruetersPeters1984,
  author    = {Gr{\"u}ters, Hugo and Peters, Norbert},
  title     = {Mechanik. Bd. 2 Dynamik. Peters, Norbert; Gr{\"u}ters, Hugo},
  publisher = {Inst. f{\"u}r Techn. Mechanik, RWTH Aachen},
  address   = {Aachen},
  pages     = {138, 13 S.: graph Darst.},
  year      = {1984},
  language  = {de}
}
@book{GruetersPeters1982,
  author    = {Gr{\"u}ters, Hugo and Peters, Norbert},
  title     = {Mechanik. Bd. 1 Statik, Festigkeitslehre / N. Peters, H. Gr{\"u}ters},
  publisher = {Inst. f{\"u}r Techn. Mechanik, RWTH Aachen},
  address   = {Aachen},
  pages     = {[ca.] 140 S.: graph. Darst.},
  year      = {1982},
  language  = {de}
}