@misc{TSG_2014-2015__32__-1_0,
     title = {Pr\'eface},
     journal = {S\'eminaire de th\'eorie spectrale et g\'eom\'etrie},
     pages = {i--ii},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {32},
     year = {2014-2015},
     doi = {10.5802/tsg.301},
     language = {fr},
     url = {http://www.numdam.org/articles/10.5802/tsg.301/}
}