A lift of Schur's Q-functions to the peak algebra. - Naihuan Jing; Yunnan Li (J. Comb. Theory A, 2015)

On weak peak quasisymmetric functions. - Yunnan Li (J. Comb. Theory A, 2018)

Construction of free differential algebras by extending Gröbner-Shirshov bases. - Yunnan Li; Li Guo 003 (J. Symb. Comput., 2021)