1. Two-Way Laser Link over Interplanetary Distance
2. W.-T. Ni, "ASTROD and ASTROD I: an overview" Gen. Relat. Gravit., Vol. 38 (2006), in press; and references therein
3. A. Pulido Patón, "ASTROD Gravitational Reference Sensor (GRS): goal and requirements", submitted to Nuclear Physics B, this volume
4. A. Pulido Patón and W.-T. Ni "The low-frequency sensitivity to gravitational waves for ASTROD" Gen. Relat. Gravit., Vol 38 (2006) in press
5. Acceleration disturbances and requirements for ASTROD I