1. Adams, R., Castillo-Acosta, O., Escalante-Espinosa, E., & Zavala-Cruz, J. (2011). Natural attenuation and phytoremediation of petroleum hydrocarbon impacted soil in tropical wetland environments. In Remediation of soils and aquifers (pp. 1–24). New York: Nova Publishers.
2. Ajagbe, W. O., Agbede, O. A., & Dahunsi, B. I. O. (2012). Effect of crude oil impacted sand on the properties of concrete. In S. Laryea, S. A. Agyepong, R. Leiringer, & W. Hughes (Eds.), Proceedings of the 4th West Africa Built Environment Research (WABER ‘12) (pp. 177–189). Abuja, Nigeria.
3. Akmaz, S., Iscan, O., Gurkaynak, M. A., & Yasar, M. (2011). The structural characterization of saturate, aromatic, resin, and asphaltene fractions of Batiraman crude oil. Petroleum Science and Technology, 29(2), 160–171.
4. Al-Bahry, S. N., Elshafie, A. E., Al-Wahaibi, Y. M., Al-Bemani, A. S., Joshi, S. J., Al-Maaini, R. A., Al-Alawi, W. J., Sugai, Y., & Al-Mandhari, M. (2013). Microbial consortia in Oman oil fields: A possible use in enhanced oil recovery. Journal of Microbiology and Biotechnology, 23(1), 106–117.
5. Alboudwarej, H., Felix, J. J., Taylor, S., Badry, R., Bremner, C., Brough, B., Skeates, C., Baker, A., Palmer, D., Pattison, K., Beshry, M., Krawchuk, P., Brown, G., Calvo, R., Triana, J. A. C., Hathcock, R., Koerner, K., Hughes, T., Kundu, D., Cárdenas, J. L. d., & West, C. (2006). Highlighting heavy oil. Oilfield Review, 18(2), 34–53.