@article{Johansson_2013,<br/><span class="tab"></span> title={Two-loop maximal unitarity with external masses},<br/><span class="tab"></span> volume={87},<br/><span class="tab"></span> ISSN={1550-2368},<br/><span class="tab"></span> url={http://dx.doi.org/10.1103/physrevd.87.025030},<br/><span class="tab"></span> DOI={10.1103/physrevd.87.025030},<br/><span class="tab"></span> number={2},<br/><span class="tab"></span> journal={Physical Review D},<br/><span class="tab"></span> publisher={American Physical Society (APS)},<br/><span class="tab"></span> author={Johansson,<br/><span class="tab"></span> Henrik and Kosower,<br/><span class="tab"></span> David A. and Larsen,<br/><span class="tab"></span> Kasper J.},<br/><span class="tab"></span> year={2013},<br/><span class="tab"></span> month=jan }