The Atacama Pathfinder EXperiment (APEX) – a new submillimeter facility for southern skies –R. Güsten, L. Å. Nyman, P. Schilke, K. Menten, C. Cesarsky and R. BoothA&A, 454 2 (2006) L13-L16DOI: https://doi.org/10.1051/0004-6361:20065420
