Pérez-Peraza, J., Leyva-Contreras, A., Libin, I. Y., Ishkov, V., Yudakhin, K. y Gulinsky, O. (1998) «Prediction of interplanetary shock waves using cosmic ray fluctuations», Geofísica Internacional, 37(2), pp. 87–93. doi: 10.22201/igeof.00167169p.1998.37.2.397.