Speyer, David E

• The Electronic Journal of Combinatorics Volume 17 (2010) - Research Papers
  Sortable Elements for Quivers with Cycles
  Abstract  PDF
• The Electronic Journal of Combinatorics Volume 22, Issue 4 (2015) - Papers
  A Cambrian Framework for the Oriented Cycle
  Abstract  PDF  source files  Official Source
• The Electronic Journal of Combinatorics Volume 23, Issue 2 (2016) - Papers
  Variations on a theme of Kasteleyn, with Application to the Totally Nonnegative Grassmannian
  Abstract  PDF  Revised source files  Official source