Near-infrared spectroscopic observations of massive young stellar object candidates in the central molecular zoneG. Nandakumar, M. Schultheis, A. Feldmeier-Krause, R. Schödel, N. Neumayer, F. Matteucci, N. Ryde, A. Rojas-Arriagada and A. TejA&A, 609 (2018) A109DOI: https://doi.org/10.1051/0004-6361/201731918
