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

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