Disclosure Avoidance PL 94-171 file 2010 and 2020

This question is not exactly on the ACS but I am also interested in disclosure avoidance methods used for ACS detailed tables at the census tract level.  Can someone point me to any good "white papers" census web pages, references on disclosure avoidance techniques used in the PL 94-171 files.  I'm only interested in a few variable such as age and sex (also maybe race) so that is why I am asking about PL 74-171.  I have looked at https://www.census.gov/library/publications/2021/decennial/2020-census-disclosure-avoidance-handbook.html. Thanks in advance!.  Dave Dorer