author = "I. Němec and I. Matulková and W. Krumbe and L. Andersen and I. Císařová and J. Kroupa and P. Němec and L. Bohatý and P. Becker",
  title = "Linear and nonlinear optical properties, pyroelectricity and vibrational spectroscopy of polar guanidinium hydrogen phosphite, {GuH}2PO3, and hydrogen selenite, {GuHSeO}3",
  year = 2021,
  journal = "Optical Materials",
  publisher = "Elsevier BV",
  volume = 111,
  month = "Jan",
  doi = "10.1016/j.optmat.2020.110722",
  url = ""