Bloksma, J., Northolt, M., Huber, M., van der Burgt, G. - J., & van de Vijver, L.. (2007).
A new quality concept based on life processes. En
Handbook of Organic Food Safety and Quality. Driebergen, the Netherlands: Louis Bolk Institute. Recuperado a partir de
http://www.louisbolk.org/downloads/1910.pdf 