@article{CCIRM_2010__1_1_1_0,
     author = {Brion, Michel},
     title = {Introduction to actions of algebraic groups},
     booktitle = {Actions hamiltoniennes~: invariants et classification. 6 {\textendash} 10 avril 2009},
     series = {Les cours du CIRM},
     pages = {1--22},
     publisher = {CIRM},
     number = {1},
     year = {2010},
     doi = {10.5802/ccirm.1},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/ccirm.1/}
}