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-rw-r--r--tests/unit_tests/symphonymat_base.dia.ref1
1 files changed, 1 insertions, 0 deletions
diff --git a/tests/unit_tests/symphonymat_base.dia.ref b/tests/unit_tests/symphonymat_base.dia.ref
index d57851a..17a5566 100644
--- a/tests/unit_tests/symphonymat_base.dia.ref
+++ b/tests/unit_tests/symphonymat_base.dia.ref
@@ -52,6 +52,7 @@ endfunction
// if flag <> 1 then pause,end
//endfunction
+// Reference: Westerberg, Carl-Henrik, Bengt Bjorklund, and Eskil Hultman. "An application of mixed integer programming in a Swedish steel mill." Interfaces 7, no. 2 (1977): 39-43.
// Objective function
c = [350*5,330*3,310*4,280*6,500,450,400,100]';