Radio and infrared study of southern H II regions G346.056−0.021 and G346.077−0.056S. R. Das, A. Tej, S. Vig, T. Liu, S. K. Ghosh and C. H. I. ChandraA&A, 612 (2018) A36DOI: https://doi.org/10.1051/0004-6361/201730561