@inproceedings{RMC09SMCIT, author = "Camilo Rocha and C{\'{e}}sar Mu{\~{n}}oz and H{\'{e}}ctor Cadavid", title = "A Graphical Environment for the Semantic Validation of a Plan Execution Language", booktitle = "Proceedings of the Third IEEE International Conference on Space Mission Challenges for Information Technology (SMC-IT 2009)", month = "July", year = 2009 }