Frøseth, Randi Berland; Hansen, Sissel and Bakken, Anne Kjersti    (2008) Contribution of N from frequently chopped green manure to a succeeding crop of barley.   In: Neuhoff, Daniel; Halberg, Niels; Alföldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A; Hermansen, John; Vaarst, Mette; Lueck, Lorna; Caporali, Fabio; Jensen, Henning Hogh; Migliorini, Paola and Willer, Helga (Eds.)  Cultivating the future based on science, International Society of Organic Agriculture Research (ISOFAR), University of Bonn, 1, pp. 388-391.