(9) L. Leushacke, &quot; First FGAN/MPIFR Cooperative Debris Observation Campaign: experiment outline and first results &quot; , Proceedings of the Second European Conference on Space Debris, Darmstadt, Germany, 17-19 March 1997 (ESA SP-393).
9. L. Leushacke, “First FGAN/MPIfR Cooperative Debris Observation Campaign: experiment outline and first results”, Proceedings of the Second European Conference on Space Debris, Darmstadt (Allemagne), 17-19 mars 1997 (ESA SP-393).