1. Zia H, Dondeti P, Needham TE. Intranasal drug delivery. Clin Res Regul Aff. 1993;10(2):99–135.
2. https://www.dgra.de/media/pdf/studium/masterthesis/master_da-silva_lais_2018.pdf.
3. ICH. ICH Q8 (R2) pharmaceutical development [Internet]. ICH. 2009 [cited 2022 Jan 4]. Available from: https://database.ich.org/sites/default/files/Q8%28R2%29%20Guideline.pdf.
4. ICH. ICH M4Q CTD. 2002 Sept 12 [cited 2022 Jan 5]. Available from: https://www.ich.org/page/ctd.
5. ICH. ICH Q9 quality risk management [Internet]. 2005 [cited 2022 Jan 4]. Available from: https://database.ich.org/sites/default/files/Q9%20Guideline.pdf.