Agnarsson, G., Greenlaw, R. and Kantabutra, S. 2016. On Cyber Attacks and the Maximum-Weight Rooted-Subtree Problem. Acta Cybernetica. 22, 3 (Jan. 2016), 591-612. DOI:https://doi.org/10.14232/actacyb.22.3.2016.3.