diff --git a/README.md b/README.md
index 57d639b..bfba87d 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,9 @@
 
 An experimental object-oriented version of
 [PDCO](http://web.stanford.edu/group/SOL/software/pdco).
+
+## List of dependencies
+
+* Model module (available at https://github.com/optimizers/model ),
+* Ampl to nlpmodel interface (available at https://github.com/optimizers/AmplMexInterface ),
+* Spot module (available at https://github.com/optimizers/spot ),
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diff --git a/afiro.mps b/Test/afiro.mps
similarity index 100%
rename from afiro.mps
rename to Test/afiro.mps
diff --git a/pdco_ampl.m b/Test/pdco_ampl.m
similarity index 100%
rename from pdco_ampl.m
rename to Test/pdco_ampl.m
diff --git a/script_problem.m b/Test/script_problem.m
similarity index 100%
rename from script_problem.m
rename to Test/script_problem.m
diff --git a/script_test.m b/Test/script_test.m
similarity index 100%
rename from script_test.m
rename to Test/script_test.m
diff --git a/mpstolp.m b/Tools/mpstolp.m
similarity index 100%
rename from mpstolp.m
rename to Tools/mpstolp.m
diff --git a/qpstoqp.m b/Tools/qpstoqp.m
similarity index 100%
rename from qpstoqp.m
rename to Tools/qpstoqp.m
diff --git a/pdco_K1x_Cholesky.m b/Variants/pdco_K1x_Cholesky.m
similarity index 100%
rename from pdco_K1x_Cholesky.m
rename to Variants/pdco_K1x_Cholesky.m
diff --git a/build_variant.m b/build_variant.m
index 2f3c179..eff7bc2 100644
--- a/build_variant.m
+++ b/build_variant.m
@@ -1,7 +1,7 @@
 function classname = build_variant(formulation, solver)
 
   classname = sprintf('pdco_%s_%s', formulation, solver);
-  fname = [classname, '.m'];
+  fname = ['Variants/' , classname, '.m'];
   fid = fopen(fname, 'w');
   code = format_template(formulation, solver);
   fprintf(fid, code);
diff --git a/setup.m b/setup.m
index c9ceb12..454fe61 100644
--- a/setup.m
+++ b/setup.m
@@ -2,3 +2,5 @@
 addpath(fullfile(pwd, 'Solvers'))
 addpath(pwd)
 addpath(fullfile(pwd, 'readmps'))
+addpath(fullfile(pwd, 'Variants'))
+addpath(fullfile(pwd, 'Tools'))
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