On the correlation between maximum amplitude and smoothed monthly mean sunspot number during the rise of the cycle (from t=0-48 months past sunspot minimum) [microform] / Robert M. Wilson, David H. Hathaway, and Edwin J. Reichmann
原資料の出版事項: [Marshall Space Flight Center, Ala.] ; [Springfield, Va. : National Aeronautics and Space Administration, Marshall Space Flight Center : National Technical Information Service, distibutor, 1998]