Wikipedia:Articles for deletion/Glicko rating system
in addition to above, we have https://books.google.co.uk/books?id=GnICBAAAQBAJ&pg=PA2&dq=Glicko+rating+system&hl=en&sa=X&ved=0ahUKEwihz-meicHjAhWoIDQIHWUUCbYQ6AEIPjAE#v=onepage&q=Glicko%20rating%20system&f=false, https://books.google.co.uk/books?id=z6_LDAAAQBAJ&pg=PA168&dq=Glicko+rating+system&hl=en&sa=X&ved=0ahUKEwihz-meicHjAhWoIDQIHWUUCbYQ6AEIQzAF#v=onepage&q=Glicko%20rating%20system&f=false, https://books.google.co.uk/books?id=ZVJLAAAAYAAJ&q=Glicko+rating+system&dq=Glicko+rating+system&hl=en&sa=X&ved=0ahUKEwihz-meicHjAhWoIDQIHWUUCbYQ6AEIUzAI, lots of papers etc. Sufficient for 
— User:Hugsyrup, 13:22, 19 July 2019 (UTC)
Stance: keep
Cited policy: WP:GNG (Wikipedia:Notability)