@article {1804.06824, archivePrefix = {arXiv}, eprint = {1804.06824}, primaryClass = {hep-ph}, author = {Sophia Borowka and Thomas Gehrmann and Daniel Hulme}, title = {Systematic approximation of multi-scale Feynman integrals}, year = {2018}, url = {http://arxiv.org/abs/1804.06824} }