Yu. G. Prokhorov, “Equivariant minimal model program”, Russian Math. Surveys, 76:3 (2021), 461–542
Sh. Mori, Yu. G. Prokhorov, “Threefold extremal curve germs with one non-Gorenstein point”, Izv. Math., 83:3 (2019), 565–612
Yu. G. Prokhorov, “The rationality problem for conic bundles”, Russian Math. Surveys, 73:3 (2018), 375–456
S. Mori, Yu. G. Prokhorov, “Threefold extremal contractions of type (IIA). I”, Izv. Math., 80:5 (2016), 884–909
Jungkai Chen, “BIRATIONAL MAPS OF $3$-FOLDS”, Taiwanese J. Math., 19:6 (2015)