1. Beckers, J. M. & Canfield, R. C. 1976, in Physique des mouvements dans les atmospheres stellaires, ed. R. Caytrel and M. Steinberg (CNRS Colloq. 250, p. 207)
2. Bendat, J. S. & Piersol, A. G. 1971, Random Data: Analysis and Measurement Procedures (New York: Wiley-Interscience)
3. Solar activity and recurrences in magnetic-field distribution
4. Telluric water vapor contamination of the Mount Wilson solar Doppler measurements