@inproceedings{Sfondrini:2013bI, author = "Sfondrini, Alessandro", title = "{Introduction to universality and renormalization group techniques}", doi = "10.22323/1.195.0005", booktitle = "Proceedings of Eighth Modave Summer School in Mathematical Physics {\textemdash} PoS(Modave VIII)", year = 2013, volume = "195", pages = "005" }