1. Semaine d'Etude Rayonn;Amaldi,1963
2. The cosmic ray spectral modulation above 2 GV during the descending phase of solar cycle No. 19 I;Bachelet,1971
3. The cosmic ray spectral modulation above 2 GV. IV The influence on the attenuation coefficient of the nucleonic component;Bachelet;N. Cimento (B),1972
4. Study of cosmic rays by the nucleonic component;Geranios,1971
5. Asymptotic directions, variational coefficients and cut-off rigidities;Shea,1968