Chan, Tsz Lung

• The Electronic Journal of Combinatorics Volume 16, Issue 1 (2009) - Research Papers
  Graceful Tree Conjecture for Infinite Trees
  Abstract  PDF
• The Electronic Journal of Combinatorics Volume 22, Issue 2 (2015) - Papers
  Contractible Edges in 2-Connected Locally Finite Graphs
  Abstract  PDF  Official source