TY - JOUR T1 - Westerlund 1 as a template for massive star evolution JO - Proceedings of the International Astronomical Union PY - 2007/01/01 AU - Negueruela I AU - Clark JS AU - Hadfield LJ AU - Crowther PA ED - DO - DOI: 10.1017/S1743921308020620 VL - 3 IS - S250 SP - 301 EP - 306 Y2 - 2024/12/22 ER -