WalterR., AttarB., RafiqA., DelimataM., and TejaswiS. “Two Avirulent, Lentogenic Strains of Newcastle Disease Virus Are Cytotoxic for Some Human Pancreatic Tumor Lines In Vitro”. JOP. Journal of the Pancreas, Vol. 13, no. 5, Sept. 2012, pp. 502-13, doi:10.6092/1590-8577/977.