Priya, P.; Pillai, D. S.; Balusamy, C.; Rameshkumar, P.; Senthamilselvan, P. Studies on Outbreak of "New Duck Disease" in Kerala, India . Int. J. Poult. Sci. 2008, 7 (2), 189–190. https://doi.org/10.3923/ijps.2008.189.190.