Heynderickx D, Kruglanski M. AZUR/EI-88: Medium-energy low-altitude trapped proton and alpha-particle data (1969–1970) [Internet]. Royal Belgian Institute for Space Aeronomy; 2026. Available from: https://data.aeronomie.be/dataset/c6e07f22-b7b9-421c-858c-d3c991ffe6f7