A. M. Childs, Leung, D. W., and Vidal, G.,
“Reversible simulation of bipartite product Hamiltonians”,
IEEE Transactions on Information Theory, vol. 50, no. 6, pp. 1189 - 1197, 2004.
A. M. Childs, Kothari, R., Ozols, M., and Roetteler, M.,
“Easy and hard functions for the Boolean hidden shift problem”,
Proceedings of TQC 2013, vol. 22, pp. 50-79, 2013.