J. McMasters, and R. Cummings. Proceedings of the 42nd AIAA Aerospace Sciences Meeting and Exhibit, Reston, American Institute of Aeronautics and Astronautics, Inc., (2004)
C. Schulze, M. Gräber, M. Huhn, and U. Grätz. Proceedings of the 8th international Modelica Conference, page 44-55. Linköping, Linköping University Electronic Press, Linköpings Universitet, (2011)