Jumina, Dwi Siswanta, Mayliana Anggraeni, Muhamad Idham Darusalam Mardjan, Panut Mulyono, and Keisuke Ohto. “Calix[4]resorcinarene-Chitosan Hybrid via Amide Bond Formation”. Asian Journal of Chemistry 27, no. 6 (March 18, 2015): 2273–2276. Accessed August 26, 2024. https://asianpubs.org/index.php/ajchem/article/view/27_6_73.