Nosé, M., Iyemori, T., Kumasaka, N., Cifuentes-Nava, G., Matzka, J., Love, J. J., Cardwell, J. E., Gilder, S., Feller, M., Celik, C., Wang, L., Hitchman, A., Obara, T., Koga, K., Matsumoto, H., Curto, J. J. (2011): New substorm index, Wp index, derived from high-resolution geomagnetic field data at low latitude and its comparison with AE and ASY indices - Proceedings, 25th IUGG General Assembly (Melbourne, Australia 2011).