Chakoyan, Ovanes. “Rapid Determination of PCDDs, PCDFs and DL-PCBs in Foods, Feeding Stuffs and Vegetable Oils Using New Modified Acid Silica”. Annals of Advances in Chemistry 7, no. 1 (January 5, 2023): 001–013. Accessed September 12, 2025. https://www.advancechemjournal.com/aac/article/view/aac-aid1037.