TY - RPRT TI - Topological order in the insulating Josephson junction array. AU - B Douçot AU - M V Feigel'man AU - L B Ioffe PY - 2003 DO - 10.1103/physrevlett.90.107003 UR - https://pubmed.ncbi.nlm.nih.gov/12689026/ ID - 12689026 ER -