Other relevant information (ca. 70. Publications) 2006: Global Trends and hydroponic Industries. Proc. 5th International hydroponic Conference, Toluca, Mexico. 2006: Hydroponic production of poinsettia: Proc. 5th International hydroponic Conference, Toluca, Mexico. 2004: Vegetables grown in Hydroponics. Proc. 4th International Hydroponic Conference. Toluca, Mexico. 2004: Aeroponic and Hydroponics – Systems and Technique. Proc. 4th Intern. Hydroponic Conf. Toluca, Mexico. 2003: Aktuelles Agrarecht für die Praxis. Weka Media GmbH & Co. KG:  ISBN 3-811-4061-0 2003: Oxygen in root environment of substrates in Hydroponic systems. Deptm. Environmental Horticulture, UC Davis (CA). 2002: Hydroponic Production of Vegetables and Ornamentals. Embryo Publications, Athens Greece. ISBN: 960-8002-12-5 2001: Gas composition and oxygen supply in the root environment of substrates in closed hyd. sys. Acta Hort. 644. p. 299. 1996: Root efficiency for uptake of water and nutrients in closed recirculation systems. Proc. 9th (ISOSC), Wageningen. 1996: Balance sheets for water, potassium and nitrogen for tomatoes. Gartenbauwissenschaft (61) 5. p. 249-255. Coordinator of student exchange program ERASMUS, UC Davis US, University K. Robert Gyöngyös, Hungary