PTBnews 2000.2English editionAugust 2000ISSN 1611-1621 Published byPhysikalisch-Technische Bundesanstalt (PTB)Braunschweig and Berlin, Germany
Chief Editor Burkhard WendePTB, Abbestr. 2-12D-10587 Berlinphone: (+49 30) 3481-480fax: (+49 30) 3481-503e-mail: ptbnews@ptb.de