1. Barton, D. C. (1925). Review of paper concerning “paraffin dirt” by H. B. Milner, American Association of Petroleum Geologists Bulletin, Vol. 9, pp. 1118–1121.
2. Beghtel, F. W., D. O. Hitzman, and K. R. Sundberg (1987). Microbial oil survey technique (MOST) evaluation of new field wildcat wells in Kansas, Association of Petroleum Geochemical Explorationists Bulletin, Vol. 3, No. 1, pp. 1–14.
3. Burke, W. H. and W. G. Meinschein (1955). Carbon 14 dating with a methane proportional counter, Review of Scientific Instruments, Vol. 26, pp. 1137–1140.
4. Coleman, D. D., C. Liu, and K. M. Riley (1988). Microbial methane in the shallow paleozoic sediments and glacial deposits of Illinois, U.S.A. Chemical Geology, Vol. 71, pp. 23–40.
5. Davis, J. B. (1952). Studies on soil samples from a “paraffin dirt” bed, American Association of Petroleum Geologists Bulletin, Vol. 36, pp. 2186–2188.