flipflop - Why does a flip-flop's outputs have to be the inverse of each other and an invalid/forbidden state discouraged - Electrical Engineering Stack Exchange
Flip-flop (electronics) - Wikipedia
Flip Flop Types, Truth Table, Circuit, Working, Applications
Difficult] Simplified T flip-flop - Community Challenges - Spintronics Community Forum
Re-creating the First Flip-Flop - IEEE Spectrum
Flip-Flops
Flip Flop Types, Truth Table, Circuit, Working, Applications