TY  - RPRT
TI  - Coronal hole evolution by sudden large scale changes
AU  - Nolte, J. T.
AU  - Gerassimenko, M.
AU  - Krieger, A. S.
AU  - Solodyna, C. V.
PY  - 1978
UR  - https://ntrs.nasa.gov/citations/19780047277
ID  - 19780047277
ER  -