Van Zele, M. A., & Schneider, O. (1993). Quiet solar geomagnetic variations at observatories in symmetrical latitudes during a minimum of solar activity.
Cita Chicago Style (17a ed.)Van Zele, María Andrea, y Otto Schneider. Quiet Solar Geomagnetic Variations at Observatories in Symmetrical Latitudes During a Minimum of Solar Activity. 1993.
Cita MLA (8a ed.)Van Zele, María Andrea, y Otto Schneider. Quiet Solar Geomagnetic Variations at Observatories in Symmetrical Latitudes During a Minimum of Solar Activity. 1993.
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