TY  - JOUR
AU  - D. V. sirotkin
TI  - Theorems of existence and sufficiency connected with local transformations of graphs for the $k$-colourability problem
JO  - Žurnal Srednevolžskogo matematičeskogo obŝestva
PY  - 2017
SP  - 98
EP  - 104
VL  - 19
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SVMO_2017_19_2_a8/
LA  - ru
ID  - SVMO_2017_19_2_a8
ER  -