Harms, U., Koeberl, C., & Zoback, M. D. (2007). Continental Scientific Drilling: A Decade of Progress, and Challenges for the Future. Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-68778-8

Harms, Ulrich, Christian Koeberl, and Mark D. Zoback. Continental Scientific Drilling: A Decade of Progress, and Challenges for the Future. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. https://doi.org/10.1007/978-3-540-68778-8.

Harms, Ulrich, et al. Continental Scientific Drilling: A Decade of Progress, and Challenges for the Future. Springer Berlin Heidelberg, 2007. https://doi.org/10.1007/978-3-540-68778-8.