Experimental study on the formation of heavy metal sulphides using layer silicates: environmental aspects / E. HELIOS-RYBICKA, A. PIESTRZYŃSKI, S. Th. Schmidt // W: Natural microporous materials in environmental technology : [conference of the NATO advanced research workshop on the application of natural microporous materials in environmental technology : Smolenice, Slovakia, October 26–30, 1998 / ed. P. Misaelides [et al.]. — [Netherland] : Kluwer Academic Publishers, 1999. — (NATO ASI Series. Series E: Applied Sciences ; ISSN 1566-7103 ; vol. 362). — S. 137–146. — Bibliogr. s. 145–146, Abstr.

New minerals from the \emph {AU} Kupferschiefer – type deposits and their genetic implications / Adam PIESTRZYŃSKI, Jadwiga PIECZONKA // W: Naukovi osnovi prognozuvannja, po\u{s}ukiv ta ocinki rodovi\u{s}\u{c} zolota : materiali mižnarodnoï naukovoï konferencïï : L\'viv, 27–30 veresnja 1999 r. / Ministerstvo Osviti Ukraïni [et al.]. — L\'viv : [s. n.], 1999. — S. 106–109

Petrology of cassiterite aggregates from Gierczyn area, SW Poland / K. MOCHNACKA, W. MAYER, A. PIESTRZYŃSKI, H. KUCHA // W: Mineral deposits : processes to processing : proceedings of the fifth biennial SGA meeting and the tenth quadrennial IAGOD symposium, London, United Kingdom 22–25 August 1999, Vol. 1 / ed. C. J. Stanley et al.. — Rotterdam ; Brookfield : A. A. Balkema, 1999. — S. 397–400. — Bibliogr. s. 399–400, Abstr.