diff --git a/.Rbuildignore b/.Rbuildignore
index 6f2dbfd..dc8aa14 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -1,3 +1,4 @@
+^README\.md$
 ^mixsqp\.Rproj$
 ^\.Rproj\.user$
 ^\.travis\.yml$
diff --git a/DESCRIPTION b/DESCRIPTION
index 8205026..0dd1239 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Encoding: UTF-8
 Type: Package
 Package: mixsqp
-Version: 0.3-47
-Date: 2022-04-04
+Version: 0.3-48
+Date: 2022-11-15
 Title: Sequential Quadratic Programming for Fast Maximum-Likelihood
     Estimation of Mixture Proportions
 Authors@R: c(person("Youngseok","Kim",role="aut",
@@ -46,4 +46,4 @@ LinkingTo:
 LazyData: true
 NeedsCompilation: yes
 VignetteBuilder: knitr
-RoxygenNote: 7.1.0
+RoxygenNote: 7.1.2
diff --git a/R/mixsqp.R b/R/mixsqp.R
index 8a1accd..4a37dd4 100644
--- a/R/mixsqp.R
+++ b/R/mixsqp.R
@@ -261,7 +261,7 @@ mixsqp.status.didnotrun      <- "SQP algorithm was not run"
 #' algorithm for maximum likelihood estimation of mixture proportions
 #' using sequential quadratic programming. \emph{Journal of
 #' Computational and Graphical Statistics} \bold{29},
-#' 261-273. \url{https://doi.org/10.1080/10618600.2019.1689985}
+#' 261-273. \doi{10.1080/10618600.2019.1689985}
 #'
 #' @seealso \code{\link{mixobjective}}, \code{\link{mixkwdual}}
 #' 
@@ -445,7 +445,7 @@ mixsqp <- function (L, w = rep(1,nrow(L)), x0 = rep(1,ncol(L)),
   
   # Print a brief summary of the analysis, if requested.
   if (verbose) {
-    cat(sprintf("Running mix-SQP algorithm 0.3-47 on %d x %d matrix\n",n,m))
+    cat(sprintf("Running mix-SQP algorithm 0.3-48 on %d x %d matrix\n",n,m))
     cat(sprintf("convergence tol. (SQP):     %0.1e\n",convtol.sqp))
     cat(sprintf("conv. tol. (active-set):    %0.1e\n",convtol.activeset))
     cat(sprintf("zero threshold (solution):  %0.1e\n",zero.threshold.solution))
diff --git a/README.md b/README.md
index ec27dc6..5bf80cd 100644
--- a/README.md
+++ b/README.md
@@ -189,8 +189,8 @@ with contributions from [Matthew Stephens][matthew] and
 [uchicago]: https://www.uchicago.edu
 [youngseok]: https://github.com/youngseok-kim
 [peter]: https://pcarbo.github.io
-[matthew]: http://stephenslab.uchicago.edu
-[mihai]: http://www.mcs.anl.gov/~anitescu
+[matthew]: https://stephenslab.uchicago.edu
+[mihai]: https://web.cels.anl.gov/~anitescu/
 [mit-license]: https://opensource.org/licenses/mit-license.html
 [devtools]: https://github.com/r-lib/devtools
 [roxygen2]: https://cran.r-project.org/package=roxygen2
diff --git a/man/mixsqp.Rd b/man/mixsqp.Rd
index 9cc0c30..9da2b68 100644
--- a/man/mixsqp.Rd
+++ b/man/mixsqp.Rd
@@ -294,7 +294,7 @@ Y. Kim, P. Carbonetto, M. Stephens and M. Anitescu (2020). A fast
 algorithm for maximum likelihood estimation of mixture proportions
 using sequential quadratic programming. \emph{Journal of
 Computational and Graphical Statistics} \bold{29},
-261-273. \url{https://doi.org/10.1080/10618600.2019.1689985}
+261-273. \doi{10.1080/10618600.2019.1689985}
 }
 \seealso{
 \code{\link{mixobjective}}, \code{\link{mixkwdual}}