diff --git a/src/Aardvark.Data.Photometry/README.md b/src/Aardvark.Data.Photometry/README.md
new file mode 100644
index 0000000..063fb9b
--- /dev/null
+++ b/src/Aardvark.Data.Photometry/README.md
@@ -0,0 +1 @@
+Importer for [IES (IESNA LM-63)](https://www.ies.org/product/standard-file-format-for-electronic-transfer-of-photometric-data/) and [LDT (EULUMDAT)](https://en.wikipedia.org/wiki/EULUMDAT) data files.