## BibTex format

@article{Wilkes:2017:1751-8121/aa8e72,

author = {Wilkes, H and Dowker, H and Lewandowski, C and Havlicek, V},

doi = {1751-8121/aa8e72},

journal = {Journal of Physics A: Mathematical and Theoretical},

title = {A ``problem of time''' in the multiplicative scheme for the n-site hopper},

url = {http://dx.doi.org/10.1088/1751-8121/aa8e72},

volume = {50},

year = {2017}

}