Plasma 2007 : proceedings of the: International Conference on Research and Applications of Plasmas ; 4th German-Polish Conference on Plasma Diagnostics for Fusion and Applications... by International Conference on Research and Applications of Plasmas (2007 : Greifswald, Germany), German-Polish Conference on Plasma Diagnostics for Fusion and Applications (4th : 2007 : Greifswald, Germany), French-Polish Seminar on Thermal Plasma in Space and Laboratory (6th : 2007 : Greifswald, Germany)