diff --git a/setup.cfg b/setup.cfg
index eda287e..76bf66d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -32,8 +32,8 @@ install_requires =
     chardet
     lightning
     kornia>=0.7.0
-    torch
-    torchvision
+    # torch
+    # torchvision
     lz4
     imagecodecs>=2023.7.10
     wandb
diff --git a/trackastra/data/example_data.py b/trackastra/data/example_data.py
index bd099d0..999e50d 100644
--- a/trackastra/data/example_data.py
+++ b/trackastra/data/example_data.py
@@ -8,8 +8,9 @@
 def example_data_bacteria():
     """Bacteria images and masks from.
 
-    Van Vliet et al. Local interactions lead to spatially correlated gene expression levels in bacterial group (2018)
-
+    Van Vliet et al. Spatially Correlated Gene Expression in Bacterial Groups: The Role of Lineage History, Spatial Gradients, and Cell-Cell Interactions (2018)
+    https://doi.org/10.1016/j.cels.2018.03.009
+    
     subset of timelapse trpL/150310-11
     """
     img = tifffile.imread(root / "trpL_150310-11_img.tif")