Tacconi, Linda J. Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;
Braun, R., Walterbos, R. A. M., Kennicutt, R. C., & Tacconi, L. J. (1994). Counterrotating gaseous disks in NGC 4826. The Astrophysical Journal, 420, 558-569.