Aida Hanum G. Rasool, Rusli Ismail, and Abd. Rashid Abd. Rahman, “Simple and sensitive high-performance liquid chromatography (HPLC) method with ultraviolet (UV) detection for the determination of plasma propranolol concentration”, Malays J Med Sci, vol. 4, no. 2, pp. 23–27, Jul. 1997, doi: 10.21315/.