Gotardo, M. A., Sequinel, R., Pezza, L., & Pezza, H. R. (2008). Determination of atenolol in pharmaceutical formulations by diffuse reflectance spectroscopy. Eclética Química, 33(4), 07–12. https://doi.org/10.26850/1678-4618eqj.v33.4.2008.p07-12