S. Z. Mohammadi, M. . Jafari, P. . . . Mohammadzadeh Jahani, S. A. Ahmadi, and R. . Mashayekh, “Electrochemical determination of tramadol using modified screen printed electrode: Original scientific paper”, J. Electrochem. Sci. Eng., vol. 12, no. 1, pp. 127–135, Dec. 2021.