@book{
  international1971iaea,
  title={Theory of Imperfect Crystalline Solids: Trieste Lectures 1970},
  series={Proceedings Series},
  year={1971},
  isbn={92-0-130071-9},
  url={https://www.iaea.org/publications/3008/theory-of-imperfect-crystalline-solids-trieste-lectures-1970},
  publisher={INTERNATIONAL ATOMIC ENERGY AGENCY},
  address={Vienna}
}