by Papanastis, V.P. (Aristotle University, Thessaloniki (Greece). Laboratory of Range Science), Tsiouvaras, C.N. (NAGREF, National Agricultural Research Foundation, Thessaloniki (Greece). Forest Reseach Institute), Dini-Papanastasi, O. (NAGREF, National Agricultural Research Foundation, Larissa (Greece). Fodder Crops and Pastures Institute), Vaitsis, T. (Università degli Studi di Palermo (Italy). Istituto di Agronomia Generale e Coltivazioni Erbacee), Cereti, C.F. (Università degli Studi della Tuscia, Viterbo (Italy). Dipartimento di Produzione Vegetale, Sezione di Agroecosistemi), Dupraz, C. (INRA, Institut National de la Recherche Agronomique, Montpellier (France). Laboratoire d'Ecophysiologie des Plantes sous Stress Environmentaux), Armand, D. (INRA, Institut National de la Recherche Agronomique, Montpellier (France). Unité d'Ecodéveloppement), Meuret, M. (INRA, Institut National de la Recherche Agronomique, Montpellier (France). Unité d'Ecodéveloppement), Olea, L. (Junta de Extremadura, Badajoz (Spain). Servicio de Investigación y Desarrollo Tecnológico)
Published in Options Méditerranéennes. Série B : Etudes et Recherches (CIHEAM) (1999)