diff --git a/caimira/monte_carlo/data.py b/caimira/monte_carlo/data.py
index c387dbb0..e0eaa09a 100644
--- a/caimira/monte_carlo/data.py
+++ b/caimira/monte_carlo/data.py
@@ -167,6 +167,7 @@ virus_distributions = {
 # https://doi.org/10.1080/02786826.2021.1890687
 # https://doi.org/10.1016/j.jhin.2013.02.007
 # https://doi.org/10.4209/aaqr.2020.08.0531
+# https://doi.org/10.1080/02786826.2021.1890687
 mask_distributions = {
     'Type I': mc.Mask(η_inhale=Uniform(0.25, 0.80)),
     'FFP2': mc.Mask(η_inhale=Uniform(0.83, 0.91)),
diff --git a/caimira/tests/test_monte_carlo_full_models.py b/caimira/tests/test_monte_carlo_full_models.py
index 0e333526..a62cbb9a 100644
--- a/caimira/tests/test_monte_carlo_full_models.py
+++ b/caimira/tests/test_monte_carlo_full_models.py
@@ -347,6 +347,8 @@ def test_report_models(mc_model, expected_pi, expected_new_cases,
         ["Type I",  "Jul", 1.663, 0.938, 193.52],
         ["FFP2",    "Jul", 0.523, 0.253, 193.52],
         ["Type I",  "Feb", 0.659, 0.325, 193.52],
+        ["Cloth",   "Feb", 2.665, 1.757, 809.46],
+        ["Cloth",   "Jul", 5.322, 5.086, 798.47],
     ],
 )
 def test_small_shared_office_Geneva(mask_type, month, expected_pi,