Corîci, L. , Frissen, A. , Zoelen, D. , Eggen, I. , Peter, F. , Davidescu, C. , Boeriu, C.. "Synthesis of Peptide Amides using Sol-Gel Immobilized Alcalase in Batch and Continuous Reaction System". World Academy of Science, Engineering and Technology, Open Science Index 52, International Journal of Chemical and Molecular Engineering, (2011), 5(4), 400 - 405.