Popescu, C.C. Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society;
Tuffs, R.J. Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;
Popescu, C., & Tuffs, R. (2003). The first detection of Far-Infrared emission associated with an extended HI disk. The case of NGC 891. Astronomy & Astrophysics, 410(2), L21-L24. doi:10.1051/0004-6361:20031443.