Direct observation of removal of copper from lead bullion by means of aluminum / Piotr PALIMĄKA, Stanisław PIETRZYK, Tomasz SAK, Andrzej Cybulski // W: AFC-13 : Asia foundries – challenges and opportunities in modern developments in the foundry : the 13\textsuperscript{th} Asian Foundry Congress : [28–30 October 2015], Hanoi, Vietnam / ed. Pham Chi Cuong. — Hanoi : Bach Khoa Publishing House, [2015]. — ISBN: 978-604-938-550-6. — S. 197–202. — Bibliogr. s. 202, Abstr.

Surface tension in a Cu-Pb-Fe liquid alloy $(X_{Cu}=0.9)/Al_{2}O_{3}/gaseous$ phase system / Tomasz SAK, Stanisław PIETRZYK // Key Engineering Materials ; ISSN 1013-9826. — 2015 vol. 641, s. 164–168. — Bibliogr. s. 168, Abstr.. — International Conference of Non-Ferrous Metals – Processing and New Materials (ICNFM). — tekst: http://www.scientific.net/KEM.641.164.pdf