Add DOIs

Author: JohnMount

paper.bib

@@ -4,14 +4,16 @@ @Manual{vtreat
     year = {2018},
     note = {R package version 1.0.2},
     url = {https://CRAN.R-project.org/package=vtreat},
+    doi = {10.5281/zenodo.1173318}
   }
 
 
 @misc{vtreatX,
    title = {vtreat: a data.frame Processor for Predictive Modeling},
    author = {Nina Zumel and John Mount},
    year = {2017},
-   url = {https://arxiv.org/abs/1611.09477}
+   url = {https://arxiv.org/abs/1611.09477},
+   doi = {10.5281/zenodo.1173314}
 }
 
 @book{appliedmr,
@@ -28,14 +30,14 @@ @Manual{caret
     author = {Max Kuhn. Contributions from Jed Wing and Steve Weston and Andre Williams and Chris Keefer and Allan Engelhardt and Tony Cooper and Zachary Mayer and Brenton Kenkel and the R Core Team and Michael Benesty and Reynald Lescarbeau and Andrew Ziem and Luca Scrucca and Yuan Tang and Can Candan and Tyler Hunt.},
     year = {2017},
     note = {R package version 6.0-78},
-    url = {https://CRAN.R-project.org/package=caret},
+    url = {https://CRAN.R-project.org/package=caret}
   }
 
 @Manual{recipes,
     title = {recipes: Preprocessing Tools to Create Design Matrices},
     author = {Max Kuhn and Hadley Wickham},
     year = {2018},
     note = {R package version 0.1.2},
-    url = {https://CRAN.R-project.org/package=recipes},
+    url = {https://CRAN.R-project.org/package=recipes}
   }