SRINIVASU, K., J. VENKATESWARA RAO, N. APPALA RAJU, and K. MUKKANTI. 2010. “Spectrophotometric Estimation of Ceftibuten in Pharmaceutical Formulations”. Asian Journal of Chemistry 21 (5):3463-66. https://asianpubs.org/index.php/ajchem/article/view/17319.