TY - JOUR AU - Jack Douglas AU - Beatriz Betancourt AU - Paul AU - Francis Starr C2 - Proceedings of the National Academy of Sciences DA - 2015-03-10 LA - en PB - Proceedings of the National Academy of Sciences PY - 2015 TI - Quantitative Relationships Between Cooperative Motion, Emergent Elasticity and Free Volume in Model Polymer Glass-Forming Polymer Materials ER -