TY  - RPRT
TI  - Using dynamo theory to predict the sunspot number during solar cycle 21
AU  - Schatten, K. H.
AU  - Scherrer, P. H.
AU  - Svalgaard, L.
AU  - Wilcox, J. M.
PY  - 1978
UR  - https://ntrs.nasa.gov/citations/19780053157
ID  - 19780053157
ER  -