A. M. Childs and Strouse, D. J.,
“Levinson's theorem for graphs”,
Journal of Mathematical Physics, vol. 52, no. 8, p. 082102, 2011.
A. M. Childs and Gosset, D.,
“Levinson's theorem for graphs II”,
Journal of Mathematical Physics, vol. 53, no. 10, p. 102207, 2012.
B. Lackey,
“A Lichnerowicz Vanishing Theorem for Finsler Spaces”, in
The Theory of Finslerian Laplacians and Applications, Springer, 1998, pp. 227–243.
A. Ghazaryan, Graß, T., Gullans, M., Ghaemi, P., and Hafezi, M.,
“Light-induced fractional quantum Hall phases in graphene”,
Physical Review Letters, vol. 119, no. 24, p. 247403, 2017.
M. Aschbacher, Childs, A. M., and Wocjan, P.,
“The limitations of nice mutually unbiased bases”,
Journal of Algebraic Combinatorics, vol. 25, no. 2, pp. 111 - 123, 2007.