@misc{markert_normalization_and_1989, 
author={Markert, B.,Piehler, H.,Lieth, H.,Sugimae, A.},
title={Normalization and calculation of lanthanide element concentrations in environmental samples},
year={1989},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Markert, B.; Piehler, H.; Lieth, H.; Sugimae, A.: Normalization and calculation of lanthanide element concentrations in environmental samples. Radiation and Environmental Biophysics. 1989. vol. 28, 213-221.}}