Br. Purba, S.O.P. (2022) “Rajungan Shell (Portunus pelagicus) as Antitoxic Mask Coated with Chitosan Polymer Medium (CPM) For Nicotine Reduction Using Spray Coating Method”, Nusantara Science and Technology Proceedings, pp. 138–142. doi:10.11594/nstp.2022.2722.