Agent based simulation of the selected energy commodity market / Marek ZACHARA, Dariusz Pałka, Ewa Majchrzyk-Zachara // W: Proceedings of the 30\textsuperscript{th} international conference Mathematical methods in economics 2012 : 11–13 September 2012, Karviná, Czech Republic, Pt. 2 / ed. Jaroslav Ramík, Daniel Stavárek. — Karviná : Silesian University. School of Business Administration, 2012. — Opis częśc. wg okł.. — ISBN: 978-80-7248-779-0. — S. 1004–1009. — Bibliogr. s. 1009, Abstr.

Detecting unusual user behaviour to identify hijacked internet auctions accounts / Marek ZACHARA, Dariusz Pałka // W: Multidisciplinary research and practice for information systems : IFIP WG 8.4, 8.9/TC 5 : International Cross-Domain Conference and Workshop on Availability, Reliability, and Security, CD-ARES 2012 : Prague, Czech Republic, August 20–24, 2012 : proceedings / eds. Gerald Quirchmayr, [et al.]. — Heidelberg [etc.] : Springer, cop. 2012. — (Lecture Notes in Computer Science ; ISSN 0302-9743 ; LNCS 7465. Information Systems and Applications, incl. Internet/Web, and HCI). — ISBN: 978-3-642-32497-0. — S. 534–546. — Bibliogr. s. 545–546, Abstr.

Synchronization of business cycles between Poland, the euro zone and the new member states of the European Union / Joanna Wyrobek, Zbigniew Stanczyk, Marek ZACHARA // W: Proceedings of the 30\textsuperscript{th} international conference Mathematical methods in economics 2012 : 11–13 September 2012, Karviná, Czech Republic, Pt. 2 / ed. Jaroslav Ramík, Daniel Stavárek. — Karviná : Silesian University. School of Business Administration, 2012. — Opis częśc. wg okł.. — ISBN: 978-80-7248-779-0. — S. 998–1003. — Bibliogr. s. 1003, Abstr.. — W bazie Web of Science brak afiliacji AGH