Recent advances in metrology and fundamental constants: Varenna on Lake Como, Villa Monastero, 25 July-4 August 2000. Quinn, T. J. (Terry J.), Leschiutta, Sigfrido., Tavella, P. (Patrizia), Società italiana di fisica., IOS Press. Amsterdam: IOS Press. 2001. ISBN978-1-61499-002-4. OCLC784969866.{{cite book}}: CS1 maint: others (link)