@misc{markert_element_concentration_1989, 
author={Markert, B.},
title={Element concentration cadasters in ecosystems (ECCE)},
year={1989},
howpublished = {journal article},
note = {Markert, B.: Element concentration cadasters in ecosystems (ECCE). Trends in Analytical Chemistry. 1989. vol. 8, 246-247.}}