Jacques Connan, Robert Carter. A geochemical study of bituminous mixtures from Failaka and Umm an‐Namel (Kuwait), from the Early Dilmun to the Early Islamic period (англ.) // Arabian Archaeology and Epigraphy / Edited by Bruno Overlaet. — John Wiley & Sons, 2007. — 26 November (vol. 18, iss. 2). — P. 139-181. — ISSN1600-0471. — doi:10.1111/j.1600-0471.2007.00283.x.
Jacques Connan, Robert Carter. A geochemical study of bituminous mixtures from Failaka and Umm an‐Namel (Kuwait), from the Early Dilmun to the Early Islamic period (англ.) // Arabian Archaeology and Epigraphy / Edited by Bruno Overlaet. — John Wiley & Sons, 2007. — 26 November (vol. 18, iss. 2). — P. 139-181. — ISSN1600-0471. — doi:10.1111/j.1600-0471.2007.00283.x.