Hori, T., Ueda, Y., Shidatsu, M., Kawamuro, T., Kubota, A., Done, C., Nakahira, S., Tsumura, K., Shirahata, M., Nagayama, T., "SUZAKU Observation of the Black Hole Binary 4U 1630-47 in the Very High State", Astrophysical Journal, 2014