@incollection{Welna11,
author = {Maja Welna and Anna Szymczycha-Madeja and Pawel Pohl},
title = {Quality of the Trace Element Analysis: Sample Preparation Steps},
booktitle = {Wide Spectra of Quality Control},
publisher = {IntechOpen},
address = {Rijeka},
year = {2011},
editor = {Isin Akyar},
chapter = {4},
doi = {10.5772/21290},
url = {https://doi.org/10.5772/21290}
}