Plethysm, Categories, and Combinatorics

- Oscar Nava? and Gian-Carlo Rota?, Plethysm, Categories, and Combinatorics,
*Advances in Mathematics*58, pages 61-88, 1985. ScienceDirect

- A. Joyal?, Une théorie combinatoire des séries formelles,
*Advances in Mathematics*42, pages 1-82, 1981.

category: mathematical methods