diff --git a/tests/refs/client_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv b/tests/refs/client_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv
new file mode 100644
index 0000000000000000000000000000000000000000..a16b9a7b1c01808b7b327a513b116cc174d91d40
--- /dev/null
+++ b/tests/refs/client_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv
@@ -0,0 +1,7 @@
+id,cluster_id,heterogeneity_class,accuracy
+0,0,none,82.0
+1,0,erosion,56.666666666666664
+2,0,dilatation,82.33333333333334
+3,0,none,83.66666666666667
+4,0,erosion,57.99999999999999
+5,0,dilatation,83.0
diff --git a/tests/refs/global-federated_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv b/tests/refs/global-federated_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv
new file mode 100644
index 0000000000000000000000000000000000000000..15b985617ada75f8f965f7d41fe75e6be6d335e9
--- /dev/null
+++ b/tests/refs/global-federated_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv
@@ -0,0 +1,7 @@
+id,cluster_id,heterogeneity_class,accuracy
+0,,none,74.27777777777777
+1,,erosion,74.27777777777777
+2,,dilatation,74.27777777777777
+3,,none,74.27777777777777
+4,,erosion,74.27777777777777
+5,,dilatation,74.27777777777777
diff --git a/tests/refs/pers-centralized_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv b/tests/refs/pers-centralized_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv
new file mode 100644
index 0000000000000000000000000000000000000000..6c0dd9d7fcefe75841ede1c4e5c571c004d439c8
--- /dev/null
+++ b/tests/refs/pers-centralized_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv
@@ -0,0 +1,7 @@
+id,cluster_id,heterogeneity_class,accuracy
+0,,none,65.33333333333333
+1,,erosion,39.5
+2,,dilatation,79.0
+3,,none,65.33333333333333
+4,,erosion,39.5
+5,,dilatation,79.0
diff --git a/tests/refs/server_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv b/tests/refs/server_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv
new file mode 100644
index 0000000000000000000000000000000000000000..82214a8a5a8c576aa652565a94570f7ce4fd7dd5
--- /dev/null
+++ b/tests/refs/server_fashion-mnist_linear_features-distribution-skew_8_100_3_5_5_42.csv
@@ -0,0 +1,7 @@
+id,cluster_id,heterogeneity_class,accuracy
+0,2,none,85.66666666666667
+1,1,erosion,66.66666666666666
+2,0,dilatation,86.66666666666667
+3,2,none,88.66666666666667
+4,1,erosion,68.66666666666667
+5,0,dilatation,89.0