@misc{kneifel_nitrate_removal_1988, 
author={Kneifel, K.,Luehrs, G.},
title={Nitrate removal by electrodialysis for brewing water},
year={1988},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Kneifel, K.; Luehrs, G.: Nitrate removal by electrodialysis for brewing water. Desalination. 1988. vol. 68, 203-209.}}