@book{WBLN_2019__6_,
     author = {Collectif},
     title = {Winter {Braids} {IX} {(Reims,} 2019)},
     series = {Winter Braids Lecture Notes},
     publisher = {Winter Braids School},
     year = {2019},
     language = {en},
     url = {http://www.numdam.org/item/WBLN_2019__6_/}
}