1. The spectral analysis of cosmic ray variations in the 10−7 - 10−3Hz frequency band;Attolini;13th Int. Cosmic Ray Conf., Denver,1973
2. Bercovitch , M. Determination of the heliocentric cosmic ray density gradient using neutron monitor data 169 1969
3. Short-period fluctuations of cosmic ray intensity at the geomagnetic equator and their solar and terrestrial relationship;Dhanju;J. Geophys. Res.,1970
4. Power spectrum of the cosmic ray intensity variation;Fujii;13th Int. Cosmic Ray Conf., Denver,1973
5. Propagation of cosmic rays in the solar wind;Jokipii;Rev. Geophys. Space Phys.,1971