TY  - JOUR
AU  - G. N. Tyurina
TI  - On the tautness of rationally contractible curves on a surface
JO  - Izvestiya. Mathematics 
PY  - 1968
SP  - 907
EP  - 934
VL  - 2
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1968_2_4_a12/
LA  - en
ID  - IM2_1968_2_4_a12
ER  -