Rolando
Somma
Berry, D., Childs, A. M., Cleve, R., Kothari, R., & Somma, R. (2014). Exponential improvement in precision for simulating sparse Hamiltonians. Proceedings of the 46th ACM Symposium on Theory of Computing (STOC 2014), 283–292. http://doi.org/10.1145/2591796.2591854 (Original work published May 2014)