@inproceedings{vanHameren:20142q, author = "van Hameren, Andreas", title = "{Helicity amplitudes with off-shell partons}", doi = "10.22323/1.211.0057", booktitle = "Proceedings of Loops and Legs in Quantum Field Theory {\textemdash} PoS(LL2014)", year = 2014, volume = "211", pages = "057" }