TY - RPRT TI - Multiple valence superatoms. AU - J U Reveles AU - S N Khanna AU - P J Roach AU - A W Castleman PY - 2006 DO - 10.1073/pnas.0608781103 UR - https://pubmed.ncbi.nlm.nih.gov/17121987/ ID - 17121987 ER -