Obscured clusters. I. GLIMPSE 30 – A young Milky Way star cluster hosting Wolf-Rayet starsR. Kurtev, J. Borissova, L. Georgiev, S. Ortolani and V. D. IvanovA&A, 475 1 (2007) 209-216DOI: https://doi.org/10.1051/0004-6361:20066706