Synthesis, Characterization And Adsorption Test Of Poly-Tetra-p-propenyltetrahydroxycalix(4) Arene For Cadmium Ion. - Triana Kusumaningsih, Jumina, Dwi Siswanta, Mustofa, Keisuke Ohto, Hidetaka Kawakita. (J. Indo. Jour. Chem., XI (2) 2011 : 186-190)