Parton-shower uncertainties with Herwig 7: benchmarks at leading orderJohannes Bellm, Graeme Nail, Simon Plätzer, Peter Schichtel and Andrzej SiódmokEur. Phys. J. C, 76 12 (2016) 665DOI: https://doi.org/10.1140/epjc/s10052-016-4506-x