K. Gopalasatheeskumar
"Formulation and evaluation of Zolpidem nasal in situ gel".
World Journal of Pharmaceutical Research,
vol: 6,
No. 2
Jan. 2017,
pp: 940 -951,
https://scholar9.com/publication-detail/formulation-and-evaluation-of-zolpidem-nasal-in-si-13158