@article{LJM_2006_24_a5,
     author = {E. Straume},
     title = {A geometric study of many body systems},
     journal = {Lobachevskii journal of mathematics},
     pages = {73--134},
     publisher = {mathdoc},
     volume = {24},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/LJM_2006_24_a5/}
}