@misc{pereiranunes_membranes_of_1999, 
author={Pereira Nunes, S., Peinemann, K.-V., Ohlrogge, K., Alpers, A., Keller, M., Pires, A.T.N.},
title={Membranes of poly(ether imide) and nanodispersed silica},
year={1999},
howpublished = {journal article},
note = {Pereira Nunes, S.; Peinemann, K.; Ohlrogge, K.; Alpers, A.; Keller, M.; Pires, A.: Membranes of poly(ether imide) and nanodispersed silica. Journal of Membrane Science. 1999. vol. 157, 219-226.}}