Stamper, R., Belehaki, A., Buresová, D., Cander, L. R., Kutiev, I., Pietrella, M., Stanislawska, I., Stankov, S., Tsagouri, I. and Tulunay, Y. K. (2004) “Nowcasting, forecasting and warning for ionospheric propagation: tools and methods”, Annals of Geophysics, 47(2-3 Sup.). doi: 10.4401/ag-3281.