Ramesh, D., and M. Habibuddin. “DEVELOPMENT AND VALIDATION OF RP-HPLC METHOD FOR THE DETERMINATION OF ALVIMOPAN IN RAT PLASMA”. International Journal of Pharmacy and Pharmaceutical Sciences, Vol. 10, no. 10, Oct. 2018, pp. 124-9, doi:10.22159/ijpps.2018v10i10.29001.