Factorio Prints: The Complete Belt Series: Blue, Part 3.
5 to 3 - Belt Balancers - FactorioBin
6 to 3 - Belt Balancers - FactorioBin
Factorio 4-to-3 Belt Balancer Tutorial (Step-By-Step) - YouTube
Common 2-3 lane balancer appeared broken, so I made another one : r/factorio
Simple 3 to 2 belt merge - Factorio Forums
Factorio Workshop - Building A Better Factory :: N to N Belt / Lane Balancers - YouTube
Factorio.Design (@FactorioDesign) / Twitter
どなどな on Twitter: "#factorio Made a throughput unlimited 4 to 2 balancer. 100% throughput in worst case. Traditional was 50%. https://t.co/lW7xSCFGoB" / Twitter
Factorio Workshop - Building A Better Factory :: Lane/Belt Balancers - YouTube
3 to 1 balancer problem: why the loop? : r/factorio
Neat little 3 to 4 belt balancer : r/factorio
Factorio Prints: Single-Lane Belt Balancers
Another belt balancer compendium (pastebin link in comments) : r/factorio
Optimal belt balancing in Factorio - Olivier Corradi's blog