The molecular environment of the massive star forming region NGC 2024: Multi CO transition analysis
M. Emprechtinger, M. C. Wiedner, R. Simon, G. Wieching, N. H. Volgenau, F. Bielau, U. U. Graf, R. Güsten, C. E. Honingh, K. Jacobs, D. Rabanus, J. Stutzki and F. Wyrowski
