Walter, Robert, Bashar Attar, Asad Rafiq, Megan Delimata, and Sooraj Tejaswi. “Two Avirulent, Lentogenic Strains of Newcastle Disease Virus Are Cytotoxic for Some Human Pancreatic Tumor Lines In Vitro”. JOP. Journal of the Pancreas 13, no. 5 (September 10, 2012): 502-513. Accessed May 27, 2022. http://www.serena.unina.it/index.php/jop/article/view/977.