Mohamed, R. S., R. F El Naggar, M. A. M. D. O. U. H. M. HAMOUD, M. M. Hamoud, A. M. Gamal, S. E. Laban, S. A. E. Nasr, M. M. Zaki, E. Ismael, and O. K. Zahran,  "Evaluation of moisture percentage and ph scale in relation to survivability of vaccine escape mutant newcastle disease virus genotype vii in poultry manure",  Hosts and Viruses, vol. 5, no. 6: ResearchersLinks, pp. 72, 2018.