@inproceedings{WimmerCallies, author = {Wimmer, Georg and Callies, R.}, title = {Optimal Hypersonic Flight Trajectories with Full Safety in case of Mission Abort}, series = {AIAA-Paper AIAA-2000-3996}, booktitle = {AIAA-Paper AIAA-2000-3996}, address = {Denver}, language = {en} } @incollection{WimmerCallies, author = {Wimmer, Georg and Callies, R.}, title = {Efficient Treatment of Characteristic Curves in Optimal Control Problems}, series = {Workshop on recent developments concerning hypersonic flight systems}, booktitle = {Workshop on recent developments concerning hypersonic flight systems}, editor = {Sachs, G.}, address = {M{\"u}nchen}, pages = {187 -- 196}, language = {en} }