Didelon, P., Motte, F., Tremblin, P., Hill, T., Hony, S., Hennemann, M., Hennebelle, P., Anderson, L. D., Galliano, F. et al (2015) From forced collapse to H ii region expansion in Mon R2: Envelope density structure and age determination withHerschel. Astronomy & Astrophysics, 584 . A4. ISSN 0004-6361