Shift-enabled graphs: Graphs where shift-invariant filters are representable as polynomials of shift operations
L. Chen, S. Cheng, V. Stankovic, and L. Stankovic, IEEE Signal Processing Letters, June 2018, accepted. https://pure.strath.ac.uk/portal/en/publications/shift-enabled-graphs(55a95db8-5c3c-4a2b-808a-280185207916).html