engVincenzini, P4th Topical Symposium on Superconductivity and Superconducting Materials TechnologiesCondensed MatterTechna1994http://cds.cern.ch/record/275728Symposiumhttp://cds.cern.ch/record/275728oai:cds.cern.ch:275728Florence, Italy28 Jun - 4 Jul 1994