--- a
+++ b/src/__init__.py
@@ -0,0 +1,6 @@
+from __future__ import absolute_import
+print("\n\n Please cite the following paper: \n\n"
+      "K. B. Girum, L. Rebaud A.S. Cottereau et. al., 18F-FDG PET maximum intensity projections and artificial intelligence: "
+      "a win-win combination to easily measure prognostic biomarkers in DLBCL patients, in The Journal of Nuclear Medicine. \n")
+from . import *
+