This link goes to Tim Schmit's List of GOES-R-related Links. You can find just about anything there.
A BAMS Paper by Tim Schmit and co-authors on the ABI (from 2017)
A Paper by Dan Lindsey and co-authors on the Split Window Difference (from 2014, pre-GOES-R Launch)
A Paper by Dan Lindsey and co-authors on the Split Window Difference using GOES-16 data. (from 2017)
Click on the Introduction link below, then click on the band you're interested in in the image below.
Direct links to the Bands are listed below too.