1. National Agricultural and Food Centre - Grassland and Mountain Agriculture Research Institute, Mládežnícka 36, 974 21 Banská Bystrica, Slovakia
2. Department of Life Sciences, University of Trieste, Via A. Valerio 10, 34100, Italy
3. Honorary Life President, European Grassland Federation, Via Adamello 27, 33078 San Vito al Tagl.to (Pordenone), Italy
4. Matej Bel University Banská Bystrica, Faculty of Natural Sciences, Tajovského 40, 974 01 Banská Bystrica, Slovakia