Origins- Evolution of the Su-27 into an F-15 killer (Part-2) – Defencyclopedia
Flanker Radars in Beyond Visual Range Air Combat
Why don't any US Air Force or US Navy fighter jets put radar and ECM equipment in long protrusions between the exhaust nozzles like the Russian Su-57 and Su-27? - Quora
19. Su-27: The OLS-27 Infrared Search and Track (IRST) - YouTube
The Russian Jet That Fights for Both Sides | Air & Space Magazine| Smithsonian Magazine
SU-27/30 AIRCRAFT AIRBORNE RADAR MODERNIZATION » Deftech Global Limited
Sukhoi Su-27 - Wikipedia
Vishnu Som na Twitteru: "1. As we obsess with the Pak F-16 we shot down and/or the damage done in Balakot, its time for a reality check. Look at this pic -
Su-27 for DCS World
Steam Community :: Guide :: Su-27 Flanker Beginners Guide