He published many books, some of which are available on my Amazon website:
School of Chess Excellence 1: Endgame Analysis - £11.20
School of Chess Excellence 3: Strategic Play - £11.20
School of Chess Excellence 4: Opening Developments - £11.20
Dvoretsky's Analytical Manual - £22.20
Secrets of Chess Training - £12.20
Secrets of Chess Tactics - £9.20
To buy any of these books, you will need to go to my Amazon site and search for the book you require. Postage is additional at £2.80 per book.