TY - GEN AU - Geller,Aaron M AU - Mathieu,Robert D TI - A mass transfer origin for blue stragglers in NGC 188 as revealed by half-solar-mass companions SN - 1476-4687 PY - 2011///1027 N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S UR - https://doi.org/10.1038/nature10512 ER -