Ibrahim, Abdelnasser Salah Shebl, Ali Abddullah Al-Salamah, Ahmed Mohamed El-Toni, Mohamed A. El-Tayeb, and Yahya B. Elbadawi. 2013. “Immobilization of Cyclodextrin Glucanotransferase on Aminopropyl-Functionalized Silica-Coated Superparamagnetic Nanoparticles”. Electronic Journal of Biotechnology 16 (6). Valparaíso, Chile. https://preprints.pucv.cl/index.php/ejbiotechnology/article/view/v16n6-8.