Mashuri, et al. “PENGARUH IRGANOK 245 TERHADAP KRISTALINITAS DAN KESTABILAN MEKANIK POLIPADUAN POLIPROPILEN-NATURAL RUBBER”. Jurnal Sains Materi Indonesia, vol. 9, no. 3, June 2008, pp. 208-13, doi:10.17146/jsmi.2008.9.3.4690.