At EnviPro: Environmental Professionals we work according the principles of Ad Lansink: Lansink’s Ladder. See also on recycling.com: Lansink’s Ladder
The Lansink’s Ladder has been developed by a Dutch politician: Ad Lansink (1934) in 1979. It is considered still actual in the waste hierarchy, but it has taken some time before this was accepted, both in the Netherlands and abroad.
Ad has published very recently his book: Challenging Changes. This book can be obtained through EnviPro:Environmental Professionals.