@article{GT_2017_21_6_a2,
     author = {Borisov, Dennis and Joyce, Dominic},
     title = {Virtual fundamental classes for moduli spaces of sheaves on {Calabi{\textendash}Yau} four-folds},
     journal = {Geometry & topology},
     pages = {3231--3311},
     publisher = {mathdoc},
     volume = {21},
     number = {6},
     year = {2017},
     doi = {10.2140/gt.2017.21.3231},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2017.21.3231/}
}