17.
Hauggaard-Nielsen H., Ambus P., Bellostas N., Boisen S., Bris-son N., Corre-Hellou G., Crozat Y., Dahlmann C., Dibet A., Fragstein P., Gooding M., Kasyanova E., Launay M., Monti M., Pristeri A., Jensen E.: Intercropping of pea and barley for increased production, weed control, improved product quality and prevention of nitrogen-loses in European organic farming sys-tem. Bibl. Fragm. Agron, 2006, 11(3), 53-60.