On-going research about delaying reading skills

I am now interested on the topic of delaying the process of teaching children reading skills; so far I only have two resources:

http://azurahanuar.my/tidak-boleh-ajar-anak-sebelum-usia-7-tahun/

http://rewireyourbrainforlove.com/why-early-reading-is-bad-for-your-child-early-brain-development/

Am looking for more!