@MISC{HELLY.MIZ,
  AUTHOR = {Enright, Jessica and Rudnicki, Piotr},
  TITLE = {Helly property for subtrees},
  NOTE = {This work has been partially supported by the NSERC grant
      OGP 9207.},
  SECTION1 = {General preliminaries},
  SECTION2 = {Graph preliminaries},
  SECTION3 = {Trees},
  SECTION4 = {The Helly property},
  DAY = {10},
  MONTH = {January},
  YEAR = {2008},
  ADDRESS1 = {Department of Computing Science\\University of Alberta\\Edmonton, AB, Canada},
  ADDRESS2 = {Department of Computing Science\\University of Alberta\\Edmonton, AB, Canada},
  SUMMARY = {We prove, following \cite[pp.~92]{Golumbic}, that any
     family of subtrees of a finite tree satisfies the Helly property.}}

@Book{Golumbic,
 author     = {Martin Charles Golumbic},
 title      = {Algorithmic Graph Theory and Perfect Graphs},
 publisher  = {Academic Press},
 address    = {New York},
 year       = 1980}}

