@article{чуфырев_2009, 
  title={Ordering of the structure of nominally pure and doped lithium niobate single crystals}, 
  volume={24}, 
  DOI={10.24144/2415-8038.2009.24.44-50}, 
  publisher={Uzhhorod National University}, 
  author={Чуфырев, П. Г.}, 
  year={2009}, 
  month={Jun}
  }