Integral and secure cloud architecture based system for backup and retention of public sector informationPappel, Ingrid; Pappel, IngmarProceedings of the IADIS International Conference of Internet Applications and Research 20122012 / p. 105-110 https://www.researchgate.net/publication/290932698_Integral_and_secure_cloud_architecture_based_system_for_backup_and_retention_of_public_sector_information