Multiple episodes of star formation in the CN15/16/17 molecular complex M. Gennaro, A. Bik, W. Brandner, A. Stolte, B. Rochau, H. Beuther, D. Gouliermis, J. Tackenberg, N. Kudryavtseva, B. Hussmann et al. (2 more) A&A, 542 (2012) A74 Published online: 08 June 2012 DOI: 10.1051/0004-6361/201218980