Tatapudi, H. K. (2026) “An optimized Box-Behnken design RP-HPLC method for the quantification of Umiclinidinium Bromide and Vilanterol Trifenate in inhalation powder”, Drug Analytical Research. Porto Alegre, 8(1), pp. 23–32. doi: 10.22456/2527-2616.138200.