@misc{willumeit_ribosomal_structure_1997, 
author={Willumeit, R.,Schmitt, M.,Burkhardt, N.,Juenemann, R.,Wadzack, J.,Nierhaus, K. H.,Stuhrmann, H. B.},
title={Ribosomal structure research with spin contrast variation},
year={1997},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Willumeit, R.; Schmitt, M.; Burkhardt, N.; Juenemann, R.; Wadzack, J.; Nierhaus, K.; Stuhrmann, H.: Ribosomal structure research with spin contrast variation. Physica  B. 1997. vol. 234-236, 202-204.}}