1. International Conference on Enumerative Combinatorics and Applications Virtual ICECA 2023, September 4-6, 2023.
    The idea of a grammatical calculus
    Abstract | Slides

  2. Conference on the Occasion of the Retirement of Yeong-Nan Yeh, June 28, 2021.
    Context-free grammars for combinatorial enumeration

  3. 26th British Combinatorial Conference, 3–7 July 2017.
    The spt-function of Andrews

  4. 22nd International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2010), San Francisco State University, August, 2010.
    Recent developments on log-concavity and q-log-concavity of combinatorial polynomials
    PDF | 28 Citations

  5. AMS Meeting, San Diego, January, 2008.
    The q-Zeilberger algorithm and the q-WZ method for infinite series