diff --git a/R/ecg.R b/R/ecg.R
index d344af3..e426c56 100644
--- a/R/ecg.R
+++ b/R/ecg.R
@@ -1,38 +1,39 @@
-#'
-#'  Electrocardiogram Data
-#'  
-#'  Example ECG data from MIT-BIH Normal Sinus Rhythm Database, ECG1 of record 16265,
-#'  first 2049 observations (0 to 16 seconds with sampling interval of 0.0078125 seconds) 
-#'  
-#' @name ECG  
-#' @docType data
-#' @format A time series object.
-#' @source MIT-BIH Normal Sinus Rhythm Database, PhysioBank ATM, \url{http://www.physionet.org/cgi-bin/atm/ATM}
-#' @keywords datasets
-#' @examples
-#' data("ECG")
-#' plot(ECG)
-NULL
-#'
-#'  Float Data
-#'  
-#'  The data are a position record from an acoustically tracked subsurface oceanographic float, 
-#'  used as an example data in Rilling et al (2007).
-#'  
-#' @name float
-#' @docType data
-#' @format A time series object.
-#' @source  http://wfdac.whoi.edu
-#' @keywords datasets
-#'@references
-#' \enumerate{
-#'       \item{G. Rilling, P. Flandrin, P. Goncalves and J. M. Lilly,
-#'   "Bivariate Empirical Mode Decomposition",
-#'   IEEE Signal Processing Letters, Vol. 14 (2007) 936--939}
-#'  
-#' }
-#' @examples
-#' data("float")
-#' plot(float, type = "l")
-#' 
-NULL
+#'
+#'  Electrocardiogram Data
+#'  
+#'  Example ECG data from MIT-BIH Normal Sinus Rhythm Database, ECG1 of record 16265,
+#'  first 2049 observations (0 to 16 seconds with sampling interval of 0.0078125 seconds) 
+#'  
+#' @name ECG  
+#' @docType data
+#' @format A time series object.
+#' @source MIT-BIH Normal Sinus Rhythm Database, PhysioBank ATM, 
+#' \url{https://archive.physionet.org/cgi-bin/atm/ATM}
+#' @keywords datasets
+#' @examples
+#' data("ECG")
+#' plot(ECG)
+NULL
+#'
+#'  Float Data
+#'  
+#'  The data are a position record from an acoustically tracked subsurface oceanographic float, 
+#'  used as an example data in Rilling et al (2007).
+#'  
+#' @name float
+#' @docType data
+#' @format A time series object.
+#' @source  http://wfdac.whoi.edu
+#' @keywords datasets
+#'@references
+#' \enumerate{
+#'       \item{G. Rilling, P. Flandrin, P. Goncalves and J. M. Lilly,
+#'   "Bivariate Empirical Mode Decomposition",
+#'   IEEE Signal Processing Letters, Vol. 14 (2007) 936--939}
+#'  
+#' }
+#' @examples
+#' data("float")
+#' plot(float, type = "l")
+#' 
+NULL
diff --git a/R/zzz.R b/R/zzz.R
index 2fe501d..593ef22 100644
--- a/R/zzz.R
+++ b/R/zzz.R
@@ -9,7 +9,7 @@
   citation_note <- paste0("\nPlease cite Rlibeemd in publications by using: \n",
     "Luukko PJ, Helske J, R\U00E4s\U00E4nen E (2016). Introducing libeemd:", 
     "A program package for performing the ensemble empirical mode decomposition.",
-    "Computational Statistics, 31(2), 545–557. doi: 10.1007/s00180-015-0603-9.")
+    "Computational Statistics, 31(2), 545-557. doi: 10.1007/s00180-015-0603-9.")
   
   packageStartupMessage(paste(github_note, citation_note, sep = "\n"))
 }
\ No newline at end of file
diff --git a/man/ECG.Rd b/man/ECG.Rd
index 14dcee1..f465161 100644
--- a/man/ECG.Rd
+++ b/man/ECG.Rd
@@ -11,7 +11,8 @@
 A time series object.
 }
 \source{
-MIT-BIH Normal Sinus Rhythm Database, PhysioBank ATM, \url{http://www.physionet.org/cgi-bin/atm/ATM}
+MIT-BIH Normal Sinus Rhythm Database, PhysioBank ATM, 
+\url{https://archive.physionet.org/cgi-bin/atm/ATM}
 }
 \description{
 Electrocardiogram Data