Agnarsson Geir and Greenlaw Raymond and Kantabutra Sanpawat: On cyber attacks and the maximum-weight rooted-subtree problem. In: Acta cybernetica, (22) 3. pp. 591-612. (2016)
Agnarsson Geir and Greenlaw Raymond and Kantabutra Sanpawat: The structure of rooted weighted trees modeling layered cyber-security systems. In: Acta cybernetica, (22) 4. pp. 25-59. (2016)