coronal holes
Yousef, S., and G. Ali,
"Reduced Solar Wind Speed During the Period 2006-2010",
IAGA2,Solar Wind-Space Environment Interaction, Cairo, Egypt, Cairo University Press, pp. 217-220, 2010.
Yousef, S., and G. Ali,
"Reduced Solar Wind Speed During the Period 2006-2010",
IAGA2,Solar Wind-Space Environment Interaction, Cairo, Egypt, Cairo University Press, pp. 217-220, 2010.
Yousef, S., and G. Ali,
"Reduced Solar Wind Speed During the Period 2006-2010",
IAGA2,Solar Wind-Space Environment Interaction, Cairo, Egypt, Cairo University Press, pp. 217-220, 2010.