@article{10_4153_S0008414X2100002X,
     author = {Gaiotto, Davide and Johnson-Freyd, Theo},
     title = {Holomorphic {SCFTs} with small index},
     journal = {Canadian journal of mathematics},
     pages = {573--601},
     year = {2022},
     volume = {74},
     number = {2},
     doi = {10.4153/S0008414X2100002X},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008414X2100002X/}
}