TY  - JOUR
AU  - Chris Godsil
TI  - Periodic graphs
JO  - The electronic journal of combinatorics
PY  - 2011
VL  - 18
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.37236/510/
DO  - 10.37236/510
ID  - 10_37236_510
ER  -