Syed Saud Hasan, Moosa Khan, Musarrat Sultana, Asif Iqbal, and Shamsul Arfin Qasmi, “Clinical efficacy of Bambuterol alone and in combination with Borage & Echium seed oil in chronic persistent asthma”, World J Pharm Sci, vol. 5, no. 3, pp. 221–228, Mar. 2017.