TY  - BOOK
AU  - Aksenov, V. A.
TI  - On uniquely 3-colourable planar graphs
T2  - Preprint
VL  - GT-2
PY  - 1975///
CY  - Novosibirsk
PB  - [s.n.]
KW  - Графы
KW  - Раскраска
KW  - nlr_sh1
KW  - В182.1
KW  - rubbk
N2  - Библиогр.: с. 10
ER  -