diff --git a/R/legTools.R b/R/legTools.R
index d7c6fd22aa5e696d96200a11ff664a736519b47c..84f24243c705bc42aeb58ba4f36fe1872655c4a0 100644
--- a/R/legTools.R
+++ b/R/legTools.R
@@ -10,7 +10,7 @@ NULL
 #' @name wgpigs
 #'
 #' @title Feeding type in pig weight gain
-#' 
+#'
 #' @description This is an artifial dataset corresponding a experiment
 #' to study the effect of feeding type (factor with 4 categorical
 #' nominal levels) in pig weight gain. The experiment was a randomized
@@ -24,21 +24,21 @@ NULL
 #' }
 #'
 #' @docType data
-#' 
+#'
 #' @keywords datasets
-#' 
+#'
 #' @usage data(wgpigs)
-#' 
+#'
 #' @format a \code{data.frame} with 20 records and 2 variables.
 #'
-#' @source Frederico, P. (2009). Curso de Estat{\'i}stica Experimental
-#' (15th ed.). Piracicaba, S{\~a}o Paulo: FEALQ.
+#' @source Frederico, P. (2009). Curso de Estatística Experimental
+#' (15th ed.). Piracicaba, São Paulo: FEALQ.
 #'
 #' @examples
-#' 
+#'
 #' require(lattice)
 #' data(wgpigs)
-#' 
+#'
 #' xyplot(wg~ft, data=wgpigs,
 #'        ylab="Weight gain (kg)",
 #'        xlab="Feeding type")
@@ -48,7 +48,7 @@ NULL
 #' @name potatoyield
 #'
 #' @title Potato variety competition experiment
-#' 
+#'
 #' @description These data are from an experiment done by the engineer
 #' Oscar A. Garay at Balcare, Argentina. The experiment was done in a
 #' randomized complete block design with 4 blocks. Potato yield (t
@@ -61,23 +61,23 @@ NULL
 #' }
 #'
 #' @docType data
-#' 
+#'
 #' @keywords datasets
-#' 
+#'
 #' @usage data(potatoyield)
-#' 
+#'
 #' @format a \code{data.frame} with 32 records and 3 variables.
 #'
-#' @source Frederico, P. (2009). Curso de Estat{\'i}stica Experimental
-#' (15th ed.). Piracicaba, S{\~a}o Paulo: FEALQ. (page 76)
+#' @source Frederico, P. (2009). Curso de Estatística Experimental
+#' (15th ed.). Piracicaba, São Paulo: FEALQ. (page 76)
 #'
 #' @examples
 #' require(lattice)
 #' data(potatoyield)
-#' 
+#'
 #' plot(yield~variety, data=potatoyield,
 #'      groups=block, type="o",
 #'      ylab=expression(Yield~(t~ha^{-1})),
 #'      xlab="Variety")
-#' 
+#'
 NULL
diff --git a/man/potatoyield.Rd b/man/potatoyield.Rd
index 59da5f0b795e9e54c03e1f7d8f024aaef806020a..bc79e725d7ec5887e0547abf729c4de53cf73ee8 100644
--- a/man/potatoyield.Rd
+++ b/man/potatoyield.Rd
@@ -6,8 +6,8 @@
 \title{Potato variety competition experiment}
 \format{a \code{data.frame} with 32 records and 3 variables.}
 \source{
-Frederico, P. (2009). Curso de Estat{\'i}stica Experimental
-(15th ed.). Piracicaba, S{\~a}o Paulo: FEALQ. (page 76)
+Frederico, P. (2009). Curso de Estatística Experimental
+(15th ed.). Piracicaba, São Paulo: FEALQ. (page 76)
 }
 \usage{
 data(potatoyield)
diff --git a/man/wgpigs.Rd b/man/wgpigs.Rd
index d937a10b2e80de03a6478af30e12e66e59c71056..20a2cfac9ccd141712bc28dcf7c4c43e60854ec4 100644
--- a/man/wgpigs.Rd
+++ b/man/wgpigs.Rd
@@ -6,8 +6,8 @@
 \title{Feeding type in pig weight gain}
 \format{a \code{data.frame} with 20 records and 2 variables.}
 \source{
-Frederico, P. (2009). Curso de Estat{\'i}stica Experimental
-(15th ed.). Piracicaba, S{\~a}o Paulo: FEALQ.
+Frederico, P. (2009). Curso de Estatística Experimental
+(15th ed.). Piracicaba, São Paulo: FEALQ.
 }
 \usage{
 data(wgpigs)