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  2. Dubrovin, Boris; Liu, Si-Qi; Zhang, Youjin. Bihamiltonian Cohomologies and Integrable Hierarchies II: the Tau Structures. Preprint arXiv: 1701.03222. (arXiv)
  3. Dubrovin, Boris; Liu, Si-Qi; Yang, Di; Zhang, Youjin. Hodge-GUE correspondence and the discrete KdV equation. Preprint arXiv: 1612.02333. (arXiv)
  4. Liu, Si-Qi; Zhang, Youjin; Zhou, Xu. Central Invariants of the Constrained KP Hierarchies. J. Geom. Phys. 97 (2015), 177--189. (arXiv) (Journal)
  5. Dubrovin, Boris; Liu, Si-Qi; Yang, Di; Zhang, Youjin. Hodge integrals and tau-symmetric integrable hierarchies of Hamiltonian evolutionary PDEs. Adv. Math. 293 (2016), 382--435. (arXiv) (Journal)
  6. Liu, Si-Qi; Ruan, Yongbin; Zhang, Youjin. BCFG Drinfeld-Sokolov Hierarchies and FJRW-Theory. Invent. Math. 201 (2015), 711--772. (arXiv) (Journal)
  7. Fu, Yulong; Liu, Si-Qi; Zhang, Youjin; Zhou, Chunhui. Proof of a conjecture on the genus two free energy associated to the $A_n$ singularity. J. Geom. Phys. 76 (2014), 10--24. (arXiv) (Journal)
  8. Liu, Si-Qi; Zhang, Youjin. Bihamiltonian Cohomologies and Integrable Hierarchies I: A Special Case. Comm. Math. Phy. 324 (2013), 897--935. (arXiv) (Journal)
  9. Liu, Si-Qi; Yang, Di; Zhang, Youjin. Uniqueness Theorem of $\mathcal{W}$-Constraints for Simple Singularities. Lett. Math. Phys. 103 (2013), 1329--1345. (arXiv) (Journal)
  10. Liu, Si-Qi; Xu, Dingdian; Zhang, Youjin. The inversion symmetry of the WDVV equations and tau functions. Phys. D 241 (2012), 2168--2177. (arXiv) (Journal)
  11. Dubrovin, Boris; Liu, Si-Qi; Zhang, Youjin. On the genus two free energies for semisimple Frobenius manifolds. Russ. J. Math. Phys. 19 (2012), 273--298. (arXiv) (Journal)
  12. Liu, Si-Qi; Wu, Chao-Zhong; Zhang, Youjin. On the Drinfeld-Sokolov hierarchies of $D$ type. Int. Math. Res. Not. IMRN 2011, 1952--1996. (arXiv) (Journal)
  13. Liu, Si-Qi; Zhang, Youjin. Jacobi structures of evolutionary partial differential equations. Adv. Math. 227 (2011), 73--130. (arXiv) (Journal)
  14. Chen, Ming; Liu, Si-Qi; Zhang, Youjin. Hamiltonian structures and their reciprocal transformations for the $r$-KdV-CH hierarchy. J. Geom. Phys. 59 (2009), 1227--1243. (arXiv) (Journal)
  15. Dubrovin, Boris; Liu, Si-Qi; Zhang, Youjin. Frobenius manifolds and central invariants for the Drinfeld-Sokolov bihamiltonian structures. Adv. Math. 219 (2008), 780--837. (arXiv) (Journal)
  16. Liu, Si-Qi; Wu, Chao-Zhong; Zhang, Youjin. On properties of Hamiltonian structures for a class of evolutionary PDEs. Lett. Math. Phys. 84 (2008), 47--63. (arXiv) (Journal)
  17. Liu, Si-Qi; Zhang, Youjin. On quasi-triviality and integrability of a class of scalar evolutionary PDEs. J. Geom. Phys. 57 (2006), 101--119. (arXiv) (Journal)
  18. Chen, Ming; Liu, Si-Qi; Zhang, Youjin. A two-component generalization of the Camassa-Holm equation and its solutions. Lett. Math. Phys. 75 (2006), 1--15. (arXiv) (Journal)
  19. Dubrovin, Boris; Liu, Si-Qi; Zhang, Youjin. On Hamiltonian perturbations of hyperbolic systems of conservation laws. I. Quasi-triviality of bi-Hamiltonian perturbations. Comm. Pure Appl. Math. 59 (2006), 559--615. (arXiv) (Journal)
  20. Liu, Si-Qi; Zhang, Youjin. Deformations of semisimple bihamiltonian structures of hydrodynamic type. J. Geom. Phys. 54 (2005), 427--453. (arXiv) (Journal)