Kumar, V. A., B. P. Raj, K. K. Chaitanya, and S. M. Shamiq Muthaib. “A Comparative Study of Clonidine and Dexmedetomidine With 0.5% Levobupivacaine in Ultrasound-Guided Axillary Brachial Plexus Block for Upper Limb Surgeries”. Journal of Cellular & Molecular Anesthesia, vol. 6, no. 3, May 2021, pp. 249-58, doi:10.22037/jcma.v6i3.34421.