Possibilities to assess to wear and tear characteristics in positive-displacement pumps on an example of selected parametric models of outlet pressure variations / Zenon JĘDRZYKIEWICZ, Andrzej PODSIADŁO, Jerzy STOJEK, Roman ORNACKI // W: ICCC'2004 : 5\textsuperscript{th} International Carpathian Control Conference : Zakopane, Poland, May 25–28, 2004, Vol. 1 / ed. Andrzej Kot ; AGH University of Science and Technology. Faculty of Mechanical Engineering and Robotics. Department of Process Control ; Polish Academy of Science. Mechatronics Group. Machinery Construction Committee. — Kraków : FMER AGH-UST, 2004. — Opis częśc. wg okł.. — S. 925–932. — Bibliogr. s. 932, Abstr.