Israt, S., M. Uddin, R. Jahan, and M. Karim. “Simultaneous Determination of Furosemide and Spironolactone in Pharmaceutical Formulations by Spectrophotometric Method Using Principal Component Regression”. Bangladesh Journal of Scientific and Industrial Research, vol. 51, no. 4, Dec. 2016, pp. 297-06, doi:10.3329/bjsir.v51i4.30450.