The diffuse molecular component in the nuclear bulge of the Milky WayD. Riquelme, L. Bronfman, R. Mauersberger, R. Finger, C. Henkel, T. L. Wilson and P. Cortés-ZuletaA&A, 610 (2018) A43DOI: https://doi.org/10.1051/0004-6361/201730602