Khan, H. et al. 2017. Spectroscopic Determination of Aspirin and Omeprazole by Absorbance Ratio and Multicomponent Mode Method. International Journal of Pharmaceutical Sciences and Nanotechnology(IJPSN). 10, 6 (Nov. 2017), 3900–3905. DOI:https://doi.org/10.37285/ijpsn.2017.10.6.4.