There is no academic paper or technical report specifically titled or discussing "v1.0.13 extra quality" for God of War (2018)
On the PC side, the v1.0.13 patch was a minor release focused on credit updates. However, the broader v1.0.x lifecycle introduced critical "extra quality" features: god of war update v1013 extra quality
While many players were hoping for a major performance overhaul or new "Extra Quality" settings with Patch v1.0.13 , the actual update released on May 22, 2023 , was quite minor. According to the official Steam News announcement There is no academic paper or technical report