1. New determination of neutron monitor coupling functions;Baduell;Space Res.,1963
2. High altitude cosmic ray intensity measurements, 2, Results obtained during 2 years of decreasing solar activity;Becerra;SPARMO Bull.,1964
3. Enhancement of the X-ray intensity at balloon altitudes in the South American anomaly;Ghielmetti;Phys. Rev. Letters,1964
4. High altitude cosmic ray intensity measurements at low geomagnetic latitudes, 1, Low weight equipment for cosmic ray detection;Ghielmetti;SPARMO Bull.,1964
5. High altitude studies with meteorological balloons;Hopper;Beitr. Phys. Atmosphaere,1960