@book{WBLN_2014__1_,
     author = {Collectif},
     title = {Winter {Braids} {IV} {(Dijon,} 2014)},
     series = {Winter Braids Lecture Notes},
     publisher = {Winter Braids School},
     year = {2014},
     url = {http://www.numdam.org/item/WBLN_2014__1_/}
}