Permutation Patterns and Statistics, Theodore Dokos, Tim Dwyer,
Bryan P. Johnson, Bruce E. Sagan, Kimberly Selsor. Discrete Mathematics
312-18 P. 2760-2775
(sciencedirect)
On 012-Avoiding Ascent Sequences, William Y. C. Chen, Alvin Y. L. Dai, Theodore Dokos, Tim Dwyer, Bruce E. Sagan
(arXiv)