Cheltsov I. Shramov C., “Weakly-Exceptional Singularities in Higher Dimensions”, J. Reine Angew. Math., 689 (2014), 201–241
Sakovics D., “Weakly-Exceptional Quotient Singularities”, Cent. Eur. J. Math., 10:3 (2012), 885–902
Cheltsov I. Shramov C., “Six-Dimensional Exceptional Quotient Singularities”, Math. Res. Lett., 18:6 (2011), 1121–1139
Cheltsov I. Shramov C., “On Exceptional Quotient Singularities”, Geom. Topol., 15:4 (2011), 1843–1882
Ю. Г. Прохоров, В. В. Шокуров, “Первая основная теорема о дополнениях: от глобального к локальному”, Изв. РАН. Сер. матем., 65:6 (2001), 99–128 ; Yu. G. Prokhorov, V. V. Shokurov, “The first main theorem on complements: from global to local”, Izv. Math., 65:6 (2001), 1169–1196