R. Kumari, A. Das, A. Kumari, S. Chandra, and M. Gari, “A comparative study of antinociceptive effects of Tapentadol, amitriptyline and combination of both in albino rats”, Int J of Pharmc Res, vol. 6, no. 12, pp. 364–368, Dec. 2016, doi: 10.7439/ijpr.v6i12.3775.