Ali, F.; Nandi, U.; Verma, R.; Rathod, R.; Sahu, P.; Kumar, R.; Prakash, A.; Singh, G. UV-Visible First Order Derivative Spectrophotometric Method Development and Validation for Simultaneous Estimation of Amitriptyline Hydrochloride and Chlordiazepoxide in Tablet Dosage Form. ajc 2016, 28, 2632-2634.