Attractions of inanimate nature of the northern Vietnam as a basis for tourism development / Jakub PAJĄK, Michał KROBICKI, Jan GOLONKA, Tadeusz SŁOMKA, Nguyen Van Giang, Witold Zuchiewicz // W: GEOTOUR 2006 : 5th international conference on Perspectives of rural tourism in the New Europe : 5–7 October 2006 Košice, Slovakia : proceedings / Technical University of Košice. BERG Faculty. Institute of Business and Tourism. Dept. of Geotourism, SACR Bratislava. — [Košice : Editorial Dept., BERG Faculty TU], [2006]. — ISBN10: 80-8073-717-7. — S. 167–172. — Bibliogr. s. 172, Abstr.

Exploring the northwestern mountainous area of Vietnam by geological processes and geotouristic objects / Jakub PAJĄK, Michał KROBICKI, Jan GOLONKA, Nguyen Van Giang // W: Geophysics - cooperation and sustainable development : proceedings of the international scientific conference : Hanoi & Sapa, November 14–17, 2012 / Institute of Geophysics, VAG. — [Hanoi] : Publishing House for Science and Technology, 2012. — Informacje na stronie tyt. również w jęz. wietnamskim. — ISBN: 978-604-913-091-5. — S. 386–391. — Bibliogr. s. 389–390, Abstr., Tóm tǎt

Geological heritage of the Sahara Desert – possibilities of inanimate nature protection and geotourism development / Jakub PAJĄK // W: GEOTOUR 2008 : “Geotourism and mining heritage” : 4\textsuperscript{nd} international conference : 26–28 June 2008, Kraków, Poland / ed. Tadeusz Słomka ; AGH University of Science and Technology. Faculty of Geology, Geophysics and Environmental Protection, IAGt – International Association for Geotourism. — [Kraków : AGH UST], [2008]. — ISBN: 978-83-88927-17-1. — S. 47