Legan, Mateja. “The Role of Cyclooxygenase-2 in the Malignant Tissue and Possible Applicability of Cyclooxygenase-2 Inhibitors in the Therapy of Cancer”. Radiology and Oncology, vol. 37, no. 3, Sept. 2003, https://www.radioloncol.com/index.php/ro/article/view/1365.