Boeriu, A., D. Dobru, R. Georgescu, S. Mocan, and C. Boeriu. “Gangliocytic Paraganglioma: A Rare Cause of Gastrointestinal Bleeding”. Journal of Gastrointestinal and Liver Diseases, vol. 24, no. 1, Mar. 2015, pp. 109-12, doi:10.15403/jgld.2014.1121.abo.