Guenther Sandleben has written a remarkable book on labour time calculation and a “society beyond money.” We will soon publish a detailed review. In the meantime, we recommend this interview with the author:
Interview on Labour Time Calculation
Arbeitszeitrechnung
Socialism of the 21st Century
Arbeitszeitrechnung - Sozialismus des 21. Jahrhunderts
Labor Time Calculation - Socialism of the 21st Century
El Cálculo del tiempo de trabajo - Socialismo del siglo XXI