@book{ Solr-oai:ethesis.upm.edu.my:3741, title = {Security Study and Encryption / Decryption Method}, author = {Al-Qdah, Majdi Taysir}, year = {2000}, url = {http://ethesis.upm.edu.my/id/eprint/3741/1/FK_2000_26_F.pdf} }