“Rheological Characterization, In Vitro Release, and Ex Vivo Permeation of Nefopam Thermosensitive and Mucoadhesive Intranasal in Situ Gel”. Journal of Pharmaceutical Negative Results, vol. 13, no. 3, Sept. 2022, pp. 715-26, https://doi.org/10.47750/pnr.2022.13.03.025.