1. Crocker, A., White, S., Andrews, J., Andrews, D. "Alchemist ACES: Enabling Technology for 2nd and Future Generation Space Transportation," AIAA 2002-4327, 38th AIAA/ ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Indianapolis, IN, July7-10,2002.
2. Crocker, A., Wuerl, A., Andrews, J., Andrews, D. "Progress On Alchemist ACES: Technology For Next Generation Space Transportation," AIAA 2003-4890, 39th AIAA/ASME/SAE/ ASEE Joint Propulsion Conference & Exhibit, Huntsville, AL, July20-23,2003.
3. Andrews, D., Cannon, J., Crocker, A "A Comparison Of Horizontal Takeoff RLVs For Next Generation Space Transportation," AIAA 2003-5037, 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Huntsville, AL, July20-23,2003.
4. Crocker, A., Wuerl, A., Sadler, G., Roche, J, and Taylor,W. "Gryphon: A Feasible Horizontal Takeoff Next Generation Concept", AIAA 2004-3391, 40thJoint Propulsion Conference & Exhibit, Fort Lauderdale, FL, July11-14,2004.