@incollection{MannhartKoppBarash2007, author = {Jochen Mannhart and Thilo Kopp and Yuri S. Barash}, title = {How Large is the Intrinsic Flux Noise of a Magnetic Flux Quantum, of Half a Flux Quantum and of a Vortex-Free Superconductor?}, booktitle = {High Tc Superconductors and Related Transition Metal Oxides: Special Contributions in Honor of K. Alex M{\"u}ller on the Occasion of his 80th Birthday}, editor = {Annette Bussmann-Holder and Hugo Keller}, isbn = {9783540710226}, doi = {10.1007/978-3-540-71023-3_19}, year = {2007}, }