@inproceedings{Baikov:20182p, author = "Baikov, Pavel and Chetyrkin, Konstantin", title = "{No-$\pi$ Theorem for Euclidean Massless Correlators}", doi = "10.22323/1.303.0008", booktitle = "Proceedings of Loops and Legs in Quantum Field Theory {\textemdash} PoS(LL2018)", year = 2018, volume = "303", pages = "008" }