added some refs

pipelines/SDM/SDM_maxEnt_outputs.json

@@ -1014,7 +1014,7 @@
   },
   "metadata": {
     "name": "Species distribution modeling with Maxent",
-    "description": "This pipeline generates predictions for a species distribution model using the Maxent algorithm. Several background methods are possible, including randomly  distributed pseudo-absences throughout the region, background thickening and  target-group background selection. Bias correction is achieved using the target-group background selection method. A variance map to represent the prediction  uncertainty is generated through bootstraping.",
+    "description": "This pipeline generates predictions for a species distribution model using the Maxent algorithm. Several background methods are possible, including randomly  distributed pseudo-absences throughout the region, background thickening  (Vollering et al. 2019, [https://doi.org/10.1111/ecog.04503] and  target-group background selection (Phillips et al. 2009, [https://doi.org/10.1890/07-2153.1]).  Bias correction is achieved using the target-group background selection method.  A variance map to represent the prediction  uncertainty is generated through bootstraping.",
     "author": [
       {
         "name": "Sarah Valentin",