diff --git a/DESCRIPTION b/DESCRIPTION
index 0a4fffe..28facda 100755
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: seqinr
 Title: Biological Sequences Retrieval and Analysis
-Version: 4.2-43
+Version: 4.2-44
 Depends: R (>= 2.10.0)
 Imports: ade4,segmented
 Authors@R: c(person("Delphine", "Charif", role = "aut"),
diff --git a/man/EXP.Rd b/man/EXP.Rd
index 18f8de7..ddb8e63 100644
--- a/man/EXP.Rd
+++ b/man/EXP.Rd
@@ -53,10 +53,6 @@ or \code{sum( freq * EXP$A3 )}. To do the same with the \%*\%
 operator you have to explicit the recycling rule as in \code{
 drop( freq \%*\% rep(EXP$A, 16))}.
 }
-\source{
-ANALSEQ EXPFILEs for command EXP.\cr
-\url{http://pbil.univ-lyon1.fr/software/doclogi/docanals/manuel.html}
-}
 \references{
   \code{citation("seqinr")}
   \describe{
diff --git a/man/amb.Rd b/man/amb.Rd
index 0f48936..e2210e4 100644
--- a/man/amb.Rd
+++ b/man/amb.Rd
@@ -26,7 +26,7 @@ a vector with expanded symbols.
 \references{ 
 
 The nomenclature for incompletely specified bases in nucleic acid sequences
-at: \url{https://www.ncbi.nlm.nih.gov/pmc/articles/PMC341218/}
+at: \url{https://pmc.ncbi.nlm.nih.gov/articles/PMC341218/}
 
 \code{citation("seqinr")}
 }
diff --git a/man/bma.Rd b/man/bma.Rd
index b6cf48f..a3c4b3c 100644
--- a/man/bma.Rd
+++ b/man/bma.Rd
@@ -23,7 +23,7 @@ bma(nucl, warn.non.IUPAC = TRUE, type = c("DNA", "RNA"))
 \references{ 
 
 The nomenclature for incompletely specified bases in nucleic acid sequences
-at: \url{https://www.ncbi.nlm.nih.gov/pmc/articles/PMC341218/}
+at: \url{https://pmc.ncbi.nlm.nih.gov/articles/PMC341218/}
 
 \code{citation("seqinr")}
 }
diff --git a/man/oriloc.Rd b/man/oriloc.Rd
index 2adeae3..ef1d261 100644
--- a/man/oriloc.Rd
+++ b/man/oriloc.Rd
@@ -65,13 +65,6 @@ skew in third codon positions.
 }
 \references{
 
-More illustrated explanations to help understand oriloc outputs
-are available there:
-\url{https://pbil.univ-lyon1.fr/software/Oriloc/howto.html}.\cr
-
-Examples of oriloc outputs on real sequence data are there:
-\url{https://pbil.univ-lyon1.fr/software/Oriloc/index.html}.\cr
-
 The original paper for oriloc:\cr
 Frank, A.C., Lobry, J.R. (2000) Oriloc: prediction of replication
 boundaries in unannotated bacterial chromosomes. \emph{Bioinformatics},