139 citations · 795 across the 39 of their papers we have counts for
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astro-ph2008★ 50 cited
Interpretation of Solar Magnetic Field Strength Observations
R. K. Ulrich, L. Bertello, J. E. Boyden +1
This study based on longitudinal Zeeman effect magnetograms and spectral line scans investigates the dependence of solar surface magnetic fields on the spectral line used and the w…
astro-ph1999★ 15 cited
Random Lag Singular Cross-Spectrum Analysis
F. Varadi, R. K. Ulrich, L. Bertello +1
In a previous paper (Varadi et al., 1999), Random Lag Singular Spectrum Analysis was offered as a tool to find oscillations in very noisy and long time series. This work presents a…