Overview of the sum/product problem by Tao https://terrytao.wordpress.com/2007/12/06/milliman-lecture-iii-sum-product-estimates-expanders-and-exponential-sums/

Overview of the sum/product problem by Tao https://terrytao.wordpress.com/2007/12/06/milliman-lecture-iii-sum-product-estimates-expanders-and-exponential-sums/ https://terrytao.wordpress.com/2007/12/06/milliman-lecture-i... [e: that lecture is almost a decade older than the result mentioned in OP]