White, William B.; Culver, David C. (2012). "Cave, Definition of". In White, William B.; Culver, David C. (eds.). Encyclopedia of Caves. Encyclopedia of Caves (Second Edition). Richmond Hill, Ontario: Academic Press. pp. 103–107. doi:10.1016/B978-0-12-383832-2.00016-5. ISBN9780123838339. S2CID127680254.
Jakopin, Primož (2009). "Mačkovica: O merjenjih in raziskavah" [Mačkovica Cave: Surveys and Exploration]. Jamar / Caver (in Slovenian). Vol. 4, no. 12. Ljubljana: Jamarska zveza Slovenije / Speleological Association of Slovenia. pp. 30–33. Retrieved 30 June 2018.
Biščak, Luka (2018). "Plezanje v Martelovi dvorani na koncu kanjona Škocjanskih jam" [Climbing in the Martel Hall at the End of Škocjanske jame Cave Canyon]. Glasnik Občine Divača / Divača Municipality Herald (in Slovenian). No. 2. pp. 47–48. Retrieved 1 July 2018.
jakopin.net
Jakopin, Primož (22–27 June 1981). Macrostereological Evaluation of Cave Space. 3rd European symposium for stereology. Proceedings of the European Symposium for Stereology. Ljubljana: Stereological Section of the Yugoslavian Association of Anatomists / Jožef Stefan Institute / "Edvard Kardelj University (published 1981). pp. 621–628. ISSN0350-3062. Retrieved 6 January 2018.
Jakopin, Primož (18–24 July 1981). On Measuring Caves by Volume. 8th international congress of speleology. Bowling Green, KY: Department of Geology, Georgia Southwestern College, Americus (published 1981). pp. 270–272. Retrieved 30 June 2018.
linguistlist.org
Reindl, Donald (19 June 2002). "Obituary: Franc Jakopin 1921-2002". The LINGUIST List: International Linguistics Community Online. Retrieved 13 December 2017.
"EVA - A Textual Data Processing Tool". Proceedings of the TELRI (Trans-European Language Resources Infrastructure), 1st European Seminar, September 15–16, 1995. Tihany, Hungary. 1995. pp. 169–171. Retrieved 13 December 2017.
White, William B.; Culver, David C. (2012). "Cave, Definition of". In White, William B.; Culver, David C. (eds.). Encyclopedia of Caves. Encyclopedia of Caves (Second Edition). Richmond Hill, Ontario: Academic Press. pp. 103–107. doi:10.1016/B978-0-12-383832-2.00016-5. ISBN9780123838339. S2CID127680254.
Podpac, Ljubo; Lindič, Jernej (1975). "Seznam članov društva za raziskovanje jam Ljubljana - 1974" [List of members of the Ljubljana Cave Exploration Society (DZRJL) - 1974]. Glas podzemlja / Voice of the Underground (in Slovenian). No. II. Ljubljana: DZRJL. pp. 18–22. Retrieved 7 January 2018.
Jakopin, Primož (1979). "O nekaterih pojmih v zvezi z jamskim prostorom" [Some Terms Related to Cave Space]. Glas podzemlja / Voice of the Underground (in Slovenian). Ljubljana: DZRJL. pp. 17–18. Retrieved 7 January 2018.
"Primož Jakopin". Department of Comparative and General Linguistics, Faculty of Arts, University of Ljubljana. Ljubljana, Slovenia. Retrieved 27 June 2016.
Jakopin, Primož; Vučkovič, Andrej (1989). STEVE reference manual: text, graphics, data base, DTP and CAI on Atari ST. OCLC439913120 – via OCLC WorldCat.
Jakopin, Primož (22–27 June 1981). Macrostereological Evaluation of Cave Space. 3rd European symposium for stereology. Proceedings of the European Symposium for Stereology. Ljubljana: Stereological Section of the Yugoslavian Association of Anatomists / Jožef Stefan Institute / "Edvard Kardelj University (published 1981). pp. 621–628. ISSN0350-3062. Retrieved 6 January 2018.
Rojšek, Daniel (11–14 September 1987). "Natural Heritage of the Classical Karst (Kras)"(PDF). In Jurij Kunaver (ed.). Karst and Man: Proceedings of the International Symposium on Human Influence in Karst. International Symposium on Human Influence in Karst. Postojna: Department of Geography, Philosophical Faculty, Ljubljana University. pp. 255–265. Retrieved 30 June 2018.