APA-referens (7:e uppl.)

Feng, Y., & Gray, K. E. (2019). XFEM-based cohesive zone approach for modeling near-wellbore hydraulic fracture complexity. Acta Geotechnica, 14(2), 377-402. https://doi.org/10.1007/s11440-018-0645-6

Chicago-referens (17:e uppl.)

Feng, Yongcun, och K. E. Gray. "XFEM-based Cohesive Zone Approach for Modeling Near-wellbore Hydraulic Fracture Complexity." Acta Geotechnica 14, no. 2 (2019): 377-402. https://doi.org/10.1007/s11440-018-0645-6.

MLA-referens (9:e uppl.)

Feng, Yongcun, och K. E. Gray. "XFEM-based Cohesive Zone Approach for Modeling Near-wellbore Hydraulic Fracture Complexity." Acta Geotechnica, vol. 14, no. 2, 2019, pp. 377-402, https://doi.org/10.1007/s11440-018-0645-6.