J. Nzeutchap. Dual Graded Graphs and Fomin's r-correspondences associated to the Hopf Algebras of Planar Binary Trees, Quasi-symmetric Functions and Noncommutative Symmetric Functions.
Poster session of 18th Formal Power Series and Algebraic Combinatorics (FPSAC'06), 2006, France. pp.632-644, 2006.
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