TY  - JOUR
AU  - S. Mori
AU  - Yu. G. Prokhorov
TI  - General elephants for threefold extremal contractions with one-dimensional fibres: exceptional case
JO  - Sbornik. Mathematics
PY  - 2021
SP  - 351
EP  - 373
VL  - 212
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_2021_212_3_a6/
LA  - en
ID  - SM_2021_212_3_a6
ER  -