<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gerald T. Yap</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">When is a Hack an Attack? A Sovereign States Options if Attacked in Cyberspace: A Case Study of Estonia 2007</style></title><secondary-title><style face="normal" font="default" size="100%">Research Report</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">April 2009  </style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Air Command And Staff College Air University Maxwell Air Force Base</style></publisher><pub-location><style face="normal" font="default" size="100%">Alabama</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record></records></xml>