TY - JOUR T1 - Ionizing Power of Massive Stars in the Cores of Two Giant HII Regions: R136A and HD 97950 JO - Astrophysics and Space Science UR - https://doi.org/10.1023/a:1001832617510 PY - 1998/01/01 AU - Dessart L AU - Crowther P ED - DO - DOI: 10.1023/a:1001832617510 PB - Springer Science and Business Media LLC VL - 260 IS - 1-2 SP - 177 EP - 180 Y2 - 2025/11/06 ER -