A multiwavelength study of star formation in the very young open cluster NGC 6530M. E. van den Ancker, P. S. Thé, A. Feinstein, R. A. Vázquez, D. de Winter and M. R. PérezAstron. Astrophys. Suppl. Ser., 123 1 (1997) 63-82DOI: https://doi.org/10.1051/aas:1997306