Draguetbrughmans, M., Lefebvre, C., Guyothermann, AM., & Bouche, R. (1984). [Physical Study of Solid Dispersions of Papaverine Laurylsulfate in Polyoxyethylene Glycol-4000]. Pharmaceutica Acta Helvetiae, 59(11), 310-315. https://hdl.handle.net/2078.5/142760 (Original work published 1984)