Garavini, G., Nobili, S., Taubenberger, S., Pastorello, A., Elias-Rosa, N., Stanishev, V., Blanc, G., Benetti, S., Goobar,
A., Mazzali, P. A., Sanchez, S. F., Salvo, M., Schmidt, B. P., & Hillebrandt, W. (2007).
ESC observations of SN 2005cf - II. Optical spectroscopy and the high-velocity features. Astronomy
& Astrophysics, 471(2), 527-535. doi:10.1051/0004-6361:20066971.