Kopp, Carlo Air superiority 'game changers': T-50 PAK-FA and J-20 <div>Defence Today, vol. 9, no. 4 (2012), p. 34-35</div><div><br></div><div>Copyright.  Carlo Kopp.</div> Stealth fighters;Aircraft;1447-0446;2012;monash:110973;1959.1/817182;Defence Studies 2016-11-04
    https://bridges.monash.edu/articles/journal_contribution/Air_superiority_game_changers_T-50_PAK-FA_and_J-20/4205175
10.4225/03/581c20994ce9e