Liu, Yanpei

• The Electronic Journal of Combinatorics Volume 17 (2010) - Notes
  Classification of ($p,q,n$)-Dipoles on Nonorientable Surfaces
  Abstract  PDF
• The Electronic Journal of Combinatorics Volume 14 (2007) - Research Papers
  Flexibility of Embeddings of Bouquets of Circles on the Projective Plane and Klein Bottle
  Abstract  PDF