Pairs of noncrossing free Dyck paths and noncrossing partitions. - William Y. C. Chen; Sabrina X. M. Pang; Ellen X. Y. Qu; Richard P. Stanley (Discret. Math., 2009)

Vertex pancyclicity in quasi-claw-free graphs. - Ellen X. Y. Qu; Jianglu Wang (Discret. Math., 2009)