The stellar population of the star-forming region G61.48+0.09 A. Marín-Franch, A. Herrero, A. Lenorzer, F. Najarro, S. Ramirez, A. Font-Ribera and D. Figer A&A, 502 2 (2009) 559-567 Published online: 27 May 2009 DOI: 10.1051/0004-6361/200911853