TY - JOUR T1 - Near and mid infrared observations of ultracompact HII regions JO - Proceedings of the International Astronomical Union PY - 2005/01/01 AU - Crowther PA ED - DO - DOI: 10.1017/S1743921305004795 VL - 1 IS - S227 SP - 389 EP - 396 Y2 - 2024/12/22 ER -