diff --git a/2008-displacement/Makefile b/2008-displacement/Makefile
index db583ef..a046819 100644
--- a/2008-displacement/Makefile
+++ b/2008-displacement/Makefile
@@ -1,4 +1,4 @@
-all: main xy2d paper.pdf
+all: main xy2d
 
 xy2d: xy2d.c
 	$(CC) -W -Wall $^ -o $@
@@ -6,12 +6,6 @@ xy2d: xy2d.c
 main: main.c
 	$(CC) -Wall -O3 -funroll-loops -ffast-math -W -Wall $^ -o $@ $$(pkg-config --cflags --libs sdl) -lSDL_image -lm
 
-paper.pdf: paper.tex fs-histo.tex
-	latex paper.tex
-	latex paper.tex
-	dvipdf paper.dvi
-
 clean:
-	rm -f paper.log paper.dvi paper.aux paper.pdf
 	rm -f xy2d main
 
diff --git a/2008-displacement/main.c b/2008-displacement/main.c
index 53c4966..9a0c5be 100644
--- a/2008-displacement/main.c
+++ b/2008-displacement/main.c
@@ -105,6 +105,7 @@ static float *fullgauss(float const *src, float mat[NN][NN])
     return dest;
 }
 
+#if 0
 static float fulldist(float const *p1, const float *p2)
 {
     float error = 0.;
@@ -119,6 +120,7 @@ static float fulldist(float const *p1, const float *p2)
 
     return error / (WIDTH * HEIGHT);
 }
+#endif
 
 static float dist(float const *p1, float const *p2, float max)
 {
diff --git a/2008-displacement/paper/Makefile b/2008-displacement/paper/Makefile
new file mode 100644
index 0000000..882909a
--- /dev/null
+++ b/2008-displacement/paper/Makefile
@@ -0,0 +1,10 @@
+all: paper.pdf
+
+paper.pdf: paper.tex fs-histo.tex
+	latex paper.tex
+	latex paper.tex
+	dvipdf paper.dvi
+
+clean:
+	rm -f paper.log paper.dvi paper.aux paper.pdf
+
diff --git a/2008-displacement/direction.tex b/2008-displacement/paper/direction.tex
similarity index 100%
rename from 2008-displacement/direction.tex
rename to 2008-displacement/paper/direction.tex
diff --git a/2008-displacement/fs-histo.eps b/2008-displacement/paper/fs-histo.eps
similarity index 100%
rename from 2008-displacement/fs-histo.eps
rename to 2008-displacement/paper/fs-histo.eps
diff --git a/2008-displacement/fs-histo.tex b/2008-displacement/paper/fs-histo.tex
similarity index 100%
rename from 2008-displacement/fs-histo.tex
rename to 2008-displacement/paper/fs-histo.tex
diff --git a/2008-displacement/jajuni-histo.eps b/2008-displacement/paper/jajuni-histo.eps
similarity index 100%
rename from 2008-displacement/jajuni-histo.eps
rename to 2008-displacement/paper/jajuni-histo.eps
diff --git a/2008-displacement/jajuni-histo.tex b/2008-displacement/paper/jajuni-histo.tex
similarity index 100%
rename from 2008-displacement/jajuni-histo.tex
rename to 2008-displacement/paper/jajuni-histo.tex
diff --git a/2008-displacement/lena-min.eps b/2008-displacement/paper/lena-min.eps
similarity index 100%
rename from 2008-displacement/lena-min.eps
rename to 2008-displacement/paper/lena-min.eps
diff --git a/2008-displacement/lena-min.tex b/2008-displacement/paper/lena-min.tex
similarity index 100%
rename from 2008-displacement/lena-min.tex
rename to 2008-displacement/paper/lena-min.tex
diff --git a/2008-displacement/lena.eps b/2008-displacement/paper/lena.eps
similarity index 100%
rename from 2008-displacement/lena.eps
rename to 2008-displacement/paper/lena.eps
diff --git a/2008-displacement/llncs.cls b/2008-displacement/paper/llncs.cls
similarity index 100%
rename from 2008-displacement/llncs.cls
rename to 2008-displacement/paper/llncs.cls
diff --git a/2008-displacement/optimum-histo.eps b/2008-displacement/paper/optimum-histo.eps
similarity index 100%
rename from 2008-displacement/optimum-histo.eps
rename to 2008-displacement/paper/optimum-histo.eps
diff --git a/2008-displacement/optimum-histo.tex b/2008-displacement/paper/optimum-histo.tex
similarity index 100%
rename from 2008-displacement/optimum-histo.tex
rename to 2008-displacement/paper/optimum-histo.tex
diff --git a/2008-displacement/ostro-histo.eps b/2008-displacement/paper/ostro-histo.eps
similarity index 100%
rename from 2008-displacement/ostro-histo.eps
rename to 2008-displacement/paper/ostro-histo.eps
diff --git a/2008-displacement/ostro-histo.tex b/2008-displacement/paper/ostro-histo.tex
similarity index 100%
rename from 2008-displacement/ostro-histo.tex
rename to 2008-displacement/paper/ostro-histo.tex
diff --git a/2008-displacement/paper.tex b/2008-displacement/paper/paper.tex
similarity index 100%
rename from 2008-displacement/paper.tex
rename to 2008-displacement/paper/paper.tex
diff --git a/2008-displacement/serpopt-histo.eps b/2008-displacement/paper/serpopt-histo.eps
similarity index 100%
rename from 2008-displacement/serpopt-histo.eps
rename to 2008-displacement/paper/serpopt-histo.eps
diff --git a/2008-displacement/serpopt-histo.tex b/2008-displacement/paper/serpopt-histo.tex
similarity index 100%
rename from 2008-displacement/serpopt-histo.tex
rename to 2008-displacement/paper/serpopt-histo.tex