Kenney, J., Shnyukov, A., Krayushkin, V., Karpov, I., Kutcherov, V. and Plotnikova, I. (2001). «Dismissal of the claims of a biological connection for natural petroleum». Energia22 (3): 26-34.Article linkArchivado el 21 de febrero de 2003 en Wayback Machine.
Szatmari, P, Da Fonseca, T, and Miekeley, N. Trace Element Evidence for Major Contribution to Commercial Oils by Serpentinizing Mantle Peridotites. AAPG Research Conference, Calgary, Canada, 2005. Abstract
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Kenney, J., Shnyukov, A., Krayushkin, V., Karpov, I., Kutcherov, V. and Plotnikova, I. (2001). «Dismissal of the claims of a biological connection for natural petroleum». Energia22 (3): 26-34.Article linkArchivado el 21 de febrero de 2003 en Wayback Machine.