Integrability in Planar Ads/CFT and Yangian Symmetry
https://indico.math.cnrs.fr/event/4272/attachments/2260/2720/IHESConference_Niklas_BEISERT.pdf
https://indico.math.cnrs.fr/event/4272/attachments/2260/2720/IHESConference_Niklas_BEISERT.pdf
By Harold Steinacker
By Hikaru Kawai