@misc{havermeyer_neutron_diffraction_2000, 
author={Havermeyer, F.,Rupp, R.A.,Schubert, D.W.,Kraetzig, E.},
title={Neutron diffraction from holographic gratings in PMMA},
year={2000},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Havermeyer, F.; Rupp, R.; Schubert, D.; Kraetzig, E.: Neutron diffraction from holographic gratings in PMMA. Physica  B. 2000. vol. 276, 330-331.}}