dab89c1682e091dfa3780ce95359ebea9f6b7d52
braney
  Thu May 18 09:49:17 2017 -0700
add licensing info to optimalLeaf library

diff --git src/optimalLeaf/Leaf.cc src/optimalLeaf/Leaf.cc
index e3fcf05..f1d09c7 100644
--- src/optimalLeaf/Leaf.cc
+++ src/optimalLeaf/Leaf.cc
@@ -1,15 +1,21 @@
+/* This code provided by Ziv Bar-Joseph with the explicit understanding that 
+ * no licensing is required for it to be used in the UCSC Genome Browser
+ * as long as reference is made to this paper:
+ * https://www.ncbi.nlm.nih.gov/pubmed/12801867
+ */
+
 // --------------------------------------------------------------------
 //                         Leaf.cc
 // This is where the optimal ordering for two subtrees 
 // is comnputed. Uses the known optimal ordering for 
 // each of the subtrees to generate the new ordering of the combined tree.
 // ---------------------------------------------------------------------
 //#include <iostream.h>
 #include <stdlib.h>
 #include "Leaf.hh"
 #include "general.hh"
 
 int compDist(const void *d1,const void *d2);
 
 // Pair for best tree construction
 LeafPair::LeafPair(int l,int r,LeafPair *pl,LeafPair *pr,int t1,int t2) {