1. The ion-optics of a two-grid electron-bombardment thruster;Aston;AIAA Paper No. 76-1029,1976
2. Ion beam divergence characteristics of three-grid accelerator systems;Aston;AIAA Paper No. 78-669,1978
3. Direct thrust measurement on 5 cm diameter mercury Kaufman ion thruster with a torsion type thrust balance;Azuma;AIAA Paper No. 78-700,1978
4. Design and tests of 5 cm light weight Kaufman ion thruster;Nakamura;AIAA Paper No. 76-1046,1976
5. Tests of “preliminary engineering model” of 5 cm diameter mercury Kaufman ion thruster;Nakamura;AIAA Paper No. 78-680 diameter mercury Kaufman ion thruster,1978