thesis.

UK: Wiesner-Hager Ltd., Level 3, Block B, Morelands, 5–23 Old Street, London EC1V 9HL,Phone (44) 020 7490 3627, Fax (44) 020 7490 0549A-4950 Altheim, Linzerstraße 22, Phone (43) 7723 460-0, Fax (43) 7723 460-331D-97072 Würzburg, Goethestraße 1, Phone (49) 931 35585-0, Fax (49) 931 3558585F-67088 Strasbourg, 12, rue du Parc, BP 312, Cedex 02, Phone (33) 388560707, Fax (33) 388564546NL-6102 BJ Echt, Houtstraat 32H, Phone (31) 475 410222, Fax (31) 475 410090CZ-101 00 Praha 10, ˇZitomírská 38, Phone (420) 2 67200300, Fax (420) 2 71732293H-1026 Budapest, Pasaréti út 22, Phone (36) 1 3560854, Fax (36) 1 212 3189Vertretung Schweiz: Dietiker Switzerland, CH-8260 Stein am Rhein, Phone (41) 52 742 21 21, Fax (41) 52 742 21 90 www.wiesner-hager.com