"Technology for Life" February 13-25, 1995 at Folkecenter for Renewable Energy : Innovative Energy Facilities Renewable Energy Technologies and Projects. A programme of theory and practice
(1995)
Eine umfassende Umweltstrategie kann Widerspruchlichkeiten in Theorie und Praxis auflosen. /Plastic and Environment:An extensive Environmental Strategy Might Solve the Inconsistency between Theory and Practice/
(1993)