https://www.facebook.com/161819153842249/posts/the-1961-ibrox-disaster-george-nelson-and-tommy-thomsonon-september-16-1961-afte/1511967285494089/
https://www.theguardian.com/news/2020/dec/03/rangers-football-forgotten-tragedy-ibrox-stadium-disaster-glasgow
https://www.goodreads.com/book/show/50123125-football-disasters