Update references.bib

Added Lu2021 and updated two other references.

Signed-off-by: wolbersm <[email protected]>

vignettes/references.bib

@@ -31,9 +31,11 @@ @article{Bartlett2021
   title={Reference-based multiple imputation - what is the right variance and how to estimate it},
   author={Bartlett, Jonathan W},
   journal={Statistics in Biopharmaceutical Research},
-  year={2021},
-  publisher={Taylor \& Francis},
-  url={https://doi.org/10.1080/19466315.2021.1983455}
+  volume={15},
+  number={1},
+  pages={178--186},
+  year={2023},
+  publisher={Taylor \& Francis}
 }
 
 @article{Carpenter2000,
@@ -244,6 +246,17 @@ @article{LiuPang2016
   publisher={Taylor \& Francis}
 }
 
+@article{Lu2021,
+  title={An alternative implementation of reference-based controlled imputation procedures},
+  author={Lu, Kaifeng},
+  journal={Statistics in Biopharmaceutical Research},
+  volume={13},
+  number={4},
+  pages={483--491},
+  year={2021},
+  publisher={Taylor \& Francis}
+}
+
 @article{Mallinckrodt2008,
   title={Recommendations for the primary analysis of continuous endpoints in longitudinal clinical trials},
   author={Mallinckrodt, Craig H and Lane, Peter W and Schnell, Dan and Peng, Yahong and Mancuso, James P},
@@ -431,9 +444,12 @@ @article{White2011multiple
 }
 
 @article{Wolbers2021,
-author = {Wolbers, Marcel and Noci, Alessandro and Delmar, Paul and Gower-Page, Craig and Yiu, Sean and Bartlett, Jonathan W.},
-title = {Standard and reference-based conditional mean imputation},
-journal = {Pharmaceutical Statistics},
-year = {2022},
-doi = {10.1002/pst.2234}
+  title={Standard and reference-based conditional mean imputation},
+  author={Wolbers, Marcel and Noci, Alessandro and Delmar, Paul and Gower-Page, Craig and Yiu, Sean and Bartlett, Jonathan W},
+  journal={Pharmaceutical statistics},
+  volume={21},
+  number={6},
+  pages={1246--1257},
+  year={2022},
+  publisher={Wiley Online Library}
 }