Reference the paper in the ecxsys documentation

R/ecxsys.R

@@ -76,6 +76,10 @@
 #'     effect_max = 21
 #' )
 #'
+#' @references \href{https://doi.org/10.1038/s41598-019-51645-4}{Liess, M.,
+#'   Henz, S. & Knillmann, S. Predicting low-concentration effects of
+#'   pesticides. Sci Rep 9, 15248 (2019).}
+#'
 #' @export
 ecxsys <- function(concentration,
                    hormesis_concentration,

man/ecxsys.Rd

@@ -93,3 +93,8 @@ model <- ecxsys(
 )
 
 }
+\references{
+\href{https://doi.org/10.1038/s41598-019-51645-4}{Liess, M.,
+  Henz, S. & Knillmann, S. Predicting low-concentration effects of
+  pesticides. Sci Rep 9, 15248 (2019).}
+}