The 35Cl/37Cl isotopic ratio in dense molecular clouds: HIFI observations of hydrogen chloride towards W3 A
J. Cernicharo, J. R. Goicoechea, F. Daniel, M. Agúndez, E. Caux, T. de Graauw, A. De Jonge, D. Kester, H. G. Leduc, E. Steinmetz, J. Stutzki and J. S. Ward
