Ponomarenko, Svetlana. “The Role of Ultrasonography in Differential Diagnosis of Degenerative Disk Disease of the Lumbar Spine”. ORTHOPAEDICS TRAUMATOLOGY and PROSTHETICS, no. 2 (July 1, 2015): 70–75. Accessed May 8, 2024. http://otp-journal.com.ua/article/view/45512.