Donovan, E., Syrjäsuo, M., Spanswick, E., Marple, S., Jackel, B., Kauristie, K., Honary, F., Germany, G., Hampton, D., Frey, H., Mende, S., Moen, J., Sandahl, I., Shiokawa, K., Weatherwax, A., Connors, M., Wild, J., Doe, R., & Lessard, M. (2007). GAIA – An International Auroral VO.