1. G. Haerendel, inSpace Research, edited by M. J. Rycroft and S. K. Runcorn (Akademie, Berlin, 1973), Vol. 13, p. 601;
2. private communication on barium cloud originally intended for release at an altitude of 9.5× earth radius.
3. Rview of pellet fueling
4. The feasibility of pellet re-fuelling of a fusion reactor
5. Magnetic Field Confinement of Laser Irradiated Solid Particle Plasmas