TY - RPRT TI - Spectral density singularities, level statistics, and localization in a sparse random matrix ensemble. AU - SN Evangelou AU - EN Economou PY - 1992 DO - 10.1103/physrevlett.68.361 UR - https://pubmed.ncbi.nlm.nih.gov/10045872/ ID - 10045872 ER -