Kaplan, M., Ozturk, S., Cakin, H., Akgun, B., Onur, M. R., & Erol, F. S. (2013). Sacrococcygeal sinus angle: As a new anatomic landmark for the posterior approach of presacral lesions. Springer Berlin Heidelberg.

Kaplan, Metin, Sait Ozturk, Hakan Cakin, Bekir Akgun, Mehmet Ruhi Onur, und Fatih Serhat Erol. Sacrococcygeal Sinus Angle: As a New Anatomic Landmark for the Posterior Approach of Presacral Lesions. Springer Berlin Heidelberg, 2013.

Kaplan, Metin, et al. Sacrococcygeal Sinus Angle: As a New Anatomic Landmark for the Posterior Approach of Presacral Lesions. Springer Berlin Heidelberg, 2013.