* Banff International Research station for Mathematical Innovation and discovery, workshop Quasi-symmetric functions"

* Organizzazione dell' International workshop GROUPS AND LANGUAGES dedicated to Toni Machì, on his 70th birthday

* Finanziamento di ricerca AST 2009, con Flavio D'Alessandro "Metodi combinatori e algoritmici nella teoria dei linguagi formali e delle strutture discrete"

* PRIN 2007, coordinatore Antonio Giambruno: "Identità polinomiali e metodi combinatori"

* Project and research grant "INTAS 03-51-5070 - Analytical and Combinatorial Methods in Number Theory and Geometry"

* Organization of the AMS Special Session "Young Algebraic Combinatorics", AMS setional Meeting, Fayetteville - Arkansas, november 2006