Kumar, Vijay, Harshvradhan ., Kranti Bhavana, and Bhartendu Bharti. “Peak Nasal Inspiratory Flow: A Comparative Study in Our Day to Day Practice”. International Journal of Otorhinolaryngology and Head and Neck Surgery 4, no. 5 (August 25, 2018): 1293–1296. Accessed May 25, 2025. https://www.ijorl.com/index.php/ijorl/article/view/1051.