1. Day-to-day variability of the basic MUF;Bradley,1999
2. Estimation of some characteristic parameters of the F-region variability;Fotiadis,1998
3. HF propagation prediction method;ITU-R,1997
4. Errors in predicted values of foF2 and hmF2 compared with the observed day-to-day variability;King;Telecornm. J.,1973
5. On the day-to-day variation of foF2 and M(3000)F2;Kouris;Adv. Space Res.,1998