7 citations as recorded by crossref.

1. Early geomagnetic data from the Astronomical Observatory of Madrid (1879–1901) C. Pro et al.
2. Datasets of the solar quiet (Sq) and solar disturbed (SD) variations of the geomagnetic field from the mid latitudinal Magnetic Observatory of Coimbra (Portugal) obtained by different methods A. Morozova et al.
3. Rescue and quality control of historical geomagnetic measurement at Sheshan observatory, China S. Zhang et al.
4. Principal component analysis as a tool to extract Sq variation from the geomagnetic field observations: Conditions of applicability A. Morozova & R. Rebbah
5. Rescue, integration, and analytical application of historical data from eight pioneering geomagnetic observatories in China S. Zhang et al.
6. Homogenization of the historical series from the Coimbra Magnetic Observatory, Portugal A. Morozova et al.
7. Correction of errors in scale values for magnetic elements for Helsinki L. Svalgaard