diff --git a/src/drr/DynamicReferenceRestraining.cpp b/src/drr/DynamicReferenceRestraining.cpp
index bc6b887bf62b141635771ee34de0b4e91cb7b190..9b6562d0bbb73159e1a437e14415f3c2210939ce 100644
--- a/src/drr/DynamicReferenceRestraining.cpp
+++ b/src/drr/DynamicReferenceRestraining.cpp
@@ -45,8 +45,8 @@ namespace drr {
 
 //+PLUMEDOC BIAS DRR
 /*
-Used to performed extended-system adaptive biasing force(eABF) \cite Lelievre2007
-method on one or more collective variables. This method is also
+Used to performed extended-system adaptive biasing force(eABF) \cite Lelievre2007 method
+on one or more collective variables. This method is also
 called dynamic reference restraining(DRR) \cite Zheng2012 .
 
 For each collective variable \f$\xi_i\f$, a fictitious variable \f$\lambda_i\f$
@@ -83,7 +83,7 @@ It may be slow. I only change the boltzmann constant and output
 precision in it. For new version and issues, please see:
 https://github.com/fhh2626/colvars
 
-After running eABF/DRR, the \ref drrtool utility can be used to extract the gradients and counts files from .drrstate. Naive(ABF) estimator's result is in .abf.grad and .abf.count files and CZAR estimator's result is in .czar.grad and .czar.count files. To get PMF, the abf_integrate(https://github.com/Colvars/colvars/tree/master/colvartools) is useful.
+After running eABF/DRR, the \ref drr_tool utility can be used to extract the gradients and counts files from .drrstate. Naive(ABF) estimator's result is in .abf.grad and .abf.count files and CZAR estimator's result is in .czar.grad and .czar.count files. To get PMF, the abf_integrate(https://github.com/Colvars/colvars/tree/master/colvartools) is useful.
 
 \par Examples
 
diff --git a/user-doc/bibliography.bib b/user-doc/bibliography.bib
index 25e1586085e311cdee8bad0e2aa56c2a7d6a10e7..acd991ce21ecc2fc194a9585f5225f16f5c0d9ce 100644
--- a/user-doc/bibliography.bib
+++ b/user-doc/bibliography.bib
@@ -2562,6 +2562,7 @@ pages   = {doi: 10.1101/113951},
   month     = {dec},
   doi       = {10.1021/acs.jctc.6b00944},
   publisher = {American Chemical Society ({ACS})},
+}
 
 @article{Bonomi:2017cc,
 author = {Bonomi, Massimiliano and Camilloni, Carlo},