Russia may develop the Super Flanker fighter from 2027 - Air

According to reports, Sukhoi may merge production of the Su-30 and Su-35 into a new, lower-cost re-powered fighter called Super Flanker

Challenger To F-15 Eagle, Russian Su-27 Fighter With 'Murky Past' Finds Its Way Into USAF's National Museum

Su-27 Flanker Front-Line Fighter Aircraft, Russia - Airforce Technology

The Most Dangerous Russian Military Aircraft

Mikoyan MiG-35 - Wikipedia

Sukhoi Su-57 / T-50 / PAK FA - flight testing and development Part II [2012-current], Page 48

Su-35 Fighters: 24 Of Russia's 'Best Dogfighters' Are 'Headed' To M.East; Experts Reveal Why Flanker-E Cannot Rule The Roost

Experts break down why the Russian air force might be hiding

Sukhoi Su-27 (Flanker)

Fighters, Missiles, and Forces – Corporal Frisk

The Most Dangerous Russian Military Aircraft