Banerjee, Pranabashish, Debasis Barman, and Braja Ballav Pakira. 2017. “Recurrent Parotitis Due to Parotid Duct Calculi”. Bengal Journal of Otolaryngology and Head Neck Surgery 25 (2). Kolkata, India:115-18. https://doi.org/10.47210/bjohns.2017.v25i2.143.