[1]. Lecture series “QCD phenomenology and scattering amplitudes” at SAGEX PhD School in Amplitudes, 2021:    https://indico.nbi.ku.dk/event/1530/overview 

[2]. Robin Brüser, Christoph Dlapa, Johannes M. Henn, Kai Yan, "The full angle- dependence of the four-loop cusp anomalous dimension in QED, " Phys. Rev. Lett. 126, 021601 (2021), arXiv:2007.04851 [hep-th] 

[3]. J. M. Henn, E. Sokatchev, K. Yan and A. Zhiboedov, "Energy-energy correlation in N= 4 super Yang-Mills theory at next-to-next-to-leading order," Phys.Rev.D 100 (2019) 3, 036010.

[4]. D. Chicherin, J. M. Henn, E. Sokatchev, and K. Yan, "From correlation functions to event shapes in QCD," JHEP 02 (2021) 053.

[5]. Lance J. Dixon, Enrico Herrmann, K. Yan, and Hua Xing Zhu, "Soft gluon emission at two loops in full color," JHEP 05 (2020) 135.

[6]. C. Dlapa, J. M. Henn, and K. Yan, "Deriving canonical differential equations for Feynman integrals from a single uniform weight integral," JHEP 05 (2020) 025. 

[7]. M. D. Schwartz, K. Yan, and H. X. Zhu, "Collinear factorization violation and effective field theory," Phys.Rev.D 97 (2018) 9, 096017.