“A Prospective Randomized Double Blind Study to Compare the Efficacy of Oral Clonidine to Intravenous Lignocaine for Attenuation of Haemodynamic Response to Laryngoscopy and Tracheal Intubation”. International Journal of Biomedical Research, vol. 7, no. 7, July 2016, pp. 499-10, https://doi.org/10.7439/ijbr.v7i7.3437.