Deletion of Duane Adler

Comment: meets GNG and sources exist. Please do a 
Stance: keep
Cited policy: Wikipedia:Articles for deletion (WP:BEFORE)

Comment: as per  as the article has been significantly improved since nomination with an expansion based on multiple reliable sources coverage which shows  is passed in my view
Stance: keep
Cited policy: Wikipedia:The Heymann Standard (WP:HEY||WP:BASIC)

Comment: per 
Stance: keep
Cited policy: Wikipedia:The Heymann Standard (WP:HEY)