Jevtič, Vladimir. 2004. “A Calcified Cervical Intervertebral Disc in a Child and a Thoracic Disc Calcification in an Adult With Posterior Herniation-Radiographic, Computed Tomography and Magnetic Resonance Imaging Findings”. Radiology and Oncology 38 (4). https://www.radioloncol.com/index.php/ro/article/view/1324.