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.
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.
A. M. Childs and Gosset, D.,
“Levinson's theorem for graphs II”,
Journal of Mathematical Physics, vol. 53, no. 10, p. 102207, 2012.
A. M. Childs and Strouse, D. J.,
“Levinson's theorem for graphs”,
Journal of Mathematical Physics, vol. 52, no. 8, p. 082102, 2011.
A. Ostrander,
“Laplacian matrices and Alexandrov topologies of digraphs”,
Linear Algebra and its Applications, vol. 481, pp. 174 - 185, 2015.