Demetra Simion. "ADVANCED BIOTECHNOLOGIES FOR OBTAINING BIODEGRADABLE COLLAGEN BASED  CORE-SHELL/HOLLOW  STRUCTURAL NANO - SIO2 COMPOSITE AND ITS APPLICATIONS FOR DRUG." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 14th SGEM GeoConference on NANO, BIO AND GREEN   TECHNOLOGIES FOR A SUSTAINABLE FUTURE (2014). https://doi.org/10.5593/sgem2014/b61/s25.031