Factorio Workshop - Building A Better Factory :: N to N Belt / Lane Balancers - YouTube
Factorio: Train Balancer | Green Lightning
3-2 balancer with unlimited throughput - Factorio Forums
Optimal belt balancing in Factorio - Olivier Corradi's blog
Factorio Prints: 16 - 8 Belt Balancer
The Complete Belt Series: Blue, Part 3. - Factorio Prints
4 Different Lane Balancers : r/factorio
graph theory - Belt Balancer problem (Factorio) - Mathematics Stack Exchange
Factorio balancer guide Blueprint, compendium and more details
My take on a lane balancer, and a 2-belt overflow balancer. These could probably be optimized, but they have proven useful (although a bit unconventional) - Lemmy.World