Marios Mavronicolas Loizos Michael Vicky Papadopoulou Lesta Giuseppe Persiano Anna Philippou Paul G. Spirakis The Price of Defense. 1256-1315 2021 83 Algorithmica 5 https://doi.org/10.1007/s00453-020-00783-7 db/journals/algorithmica/algorithmica83.html#MavronicolasMLP21