Relative response factors and multiple regression models in liquid chromatography to quantify low-dosed components using alternative standards-proof of concept: total ?9-THC content in cannabis flowers using CBD as reference., De Leersnijder, Cedric, Duchateau Céline, De Braekeleer Kris, and Deconinck Eric , Anal Bioanal Chem, 2022 Sep, Volume 414, Issue 22, (2022)