APA:
Petrović, Aleksandar S., Carević, Ivana (2015). Geological influence on the formation of Samar natural bridge and collapse valley of Ravna River from the NE Kučaj mountains (Carpatho-Balkanides, eastern Serbia).
Acta carsologica, volume 44, issue 1, str. 37-46.
URN:NBN:SI:DOC-HHCXPGYI from http://www.dlib.si
MLA:
Petrović, Aleksandar S., Carević, Ivana. "Geological influence on the formation of Samar natural bridge and collapse valley of Ravna River from the NE Kučaj mountains (Carpatho-Balkanides, eastern Serbia)."
Acta carsologica volume 44. issue 1 (2015) str. 37-46.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-HHCXPGYI>