TY  - JOUR

T1  - Spectral classification of O2-3.5If/WN5-7 stars

JO  - Monthly Notices of the Royal Astronomical Society

PY  - 2011/07/25

AU  - Crowther PA

AU  - Walborn NR

ED  - 

DO  - DOI: 10.1111/j.1365-2966.2011.19129.x

VL  - 416

IS  - 2

SP  - 1311

EP  - 1323

Y2  - 2025/11/06

ER  -