@article{JEP_2020__7__897_0,
     author = {Leray, Johan},
     title = {Protoperads {II:} {Koszul} duality},
     journal = {Journal de l{\textquoteright}\'Ecole polytechnique {\textemdash} Math\'ematiques},
     pages = {897--941},
     publisher = {Ecole polytechnique},
     volume = {7},
     year = {2020},
     doi = {10.5802/jep.131},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/jep.131/}
}