@book{
  international1976iaea,
  title={Stairs User's Manual (by V. Gadjokov, V. Dragulev, N. Gove, H. Schmid)},
  series={TECDOC Series},
  number={191},
  year={1976},
  url={https://www.iaea.org/publications/440/stairs-users-manual-by-v-gadjokov-v-dragulev-n-gove-h-schmid},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}