@article{WyrowskiGuestenMentenetal.2012,
  author    = {F. Wyrowski and R. G{\"u}sten and K. M. Menten and H. Wiesemeyer and B. Klein},
  title     = {Terahertz ammonia absorption as a probe of infall in high-mass star forming clumps},
  series   = {Astronomy \& Astrophysics},
  volume    = {542},
  publisher = {EDP Sciences},
  issn      = {0004-6361},
  doi       = {10.1051/0004-6361/201218927},
  year      = {2012},
  language  = {en}
}