@article{TAC_2021_37_a16,
     author = {Tobias Lenz},
     title = {Parsummable categories as a strictification of symmetric
monoidal categories},
     journal = {Theory and applications of categories},
     pages = {482--529},
     publisher = {mathdoc},
     volume = {37},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2021_37_a16/}
}