Warner, N. R., Jackson, R. B., Darrah, T. H., Osborn, S. G., Down, A., Zhao, K., … Vengosh, A. (2012). Reply to Engelder: Potential for fluid migration from the Marcellus Formation remains possible. Proceedings of the National Academy of Sciences of the United States of America, 109(52), E3626. https://doi.org/10.1073/pnas.1217974110

Warner, N. R., R. B. Jackson, T. H. Darrah, S. G. Osborn, A. Down, K. Zhao, A. White, and A. Vengosh. “Reply to Engelder: Potential for fluid migration from the Marcellus Formation remains possible.” Proceedings of the National Academy of Sciences of the United States of America 109, no. 52 (December 26, 2012): E3626. https://doi.org/10.1073/pnas.1217974110.

Warner NR, Jackson RB, Darrah TH, Osborn SG, Down A, Zhao K, et al. Reply to Engelder: Potential for fluid migration from the Marcellus Formation remains possible. Proceedings of the National Academy of Sciences of the United States of America. 2012 Dec 26;109(52):E3626.

Warner, N. R., et al. “Reply to Engelder: Potential for fluid migration from the Marcellus Formation remains possible.” Proceedings of the National Academy of Sciences of the United States of America, vol. 109, no. 52, Dec. 2012, p. E3626. Scopus, doi:10.1073/pnas.1217974110.

Warner NR, Jackson RB, Darrah TH, Osborn SG, Down A, Zhao K, White A, Vengosh A. Reply to Engelder: Potential for fluid migration from the Marcellus Formation remains possible. Proceedings of the National Academy of Sciences of the United States of America. 2012 Dec 26;109(52):E3626.