Guidance on sampling and monitoring for lead in drinking water / E. J. Hoekstra, C. R. Hayes, R. Aertgeerts, A. Becker, M. Jung, A. POSTAWA, L. Russell, S. WITCZAK. — [S. l.] : European Communities, cop. 2009. — 27, [3] s.. — (JRC Scientific and Technical Reports ; ISSN 1018-5593 ; JRC 51562). — Bibliogr. s. 27, Abstr.

Metals and related substances in raw and tab waters in Poland / Krzysztof Skotak, Janusz Świątczak, Stanisław WITCZAK, Adam POSTAWA // W: Cost Action 637 : METEAU : Metals and Related Substances in Drinking Water : plumbosolvency, cuprosolvency, other metals and related substances, health, environmental, and socio-economic impacts : October 24–26, 2007, Anatalya, Turkey : international conference : proceeding book / European Cooperation in the field of Scientific and Technical Research – COST. — [Turkey : COST], [2009]. — S. 52–60. — Bibliogr. s. 60, Abstr.

Response of the river's hyporheic zone after changing the contaminant load in the catchment area / J. KANIA, S. WITCZAK // W: HydroEco'2009 : 2nd international multidisciplinary conference on Hydrology and ecology: ecosystems interfacing with groundwater and surface water : 20–23 April 2009, Vienna, Austria : proceedings / eds. Jiří Bruthans, Karel Kovar, Peter Nachtnebel. — Vienna : The Austrian Federal Ministry of Agriculture, Forestry, Environment and Water Management ; University of Natural Resources and Applied Life Sciences. Department Water-Atmosphere-Environment. Inst. of Water Management, Hydrology and Hydraulic Engineering, 2009 + CD-ROM. — ISBN: 978-3-900962-80-7. — S. 99–102. — Bibliogr. s. 102, Abstr.

Selected methodological problems in tap survey in Krakow water supply area / Adam POSTAWA, Ewelina Sekula-Skotnicka, Stanisław WITCZAK // W: COST Action 637 : METEAU : Metals and related substances in drinking water : 2\textsuperscript{nd} international conference : Lisbon, Portugal, 29–31\textsuperscript{st} October 2008 : proceedings book / COST – European Cooperation in the field of Scientific and Technical Researc [etc.]. — Portugal : EPAL – Empresa Portuguesa das Águas Livres, S. A., 2009. — S. 50–60. — Bibliogr. s. 60, Abstr.