Dorman, L.I. y Libin, I.Y. 1980. The power spectrum of cosmic ray fluctuations and its role in discriminating the statistically significant fluctuations in detection data. Geofísica Internacional. 19, 2 (abr. 1980), 85–93. DOI:https://doi.org/10.22201/igeof.00167169p.1980.19.2.879.