diff --git a/ChangeLog b/ChangeLog
index 3e1f4c4..0663a48 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2015-09-21 vs. 1.2-6 - Ivan Bezerra Allaman <ivanalaman@gmail.com>
+  * A small bug was fixed in the SK.nest.aov.R function
+    The lines that were with "[:punct:]" (wrongly) were changed to "[[:punct:]]" (correctly).
+  * Corrected documentation in accordance with the premises of cran
+
 2014-09-29 vs. 1.2-5 - Ivan Bezerra Allaman <ivanalaman@gmail.com>
   * A small bug was fixed in the SK.aov.R function.
    In line 44 there was an object "sig.level=0.05" that prevented the exchange
diff --git a/DESCRIPTION b/DESCRIPTION
index 0aa0544..077f7bf 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,16 +1,12 @@
 Package: ScottKnott
 Type: Package
 Title: The ScottKnott Clustering Algorithm
-Version: 1.2-5
-Date: 2014-10-29
-Author: Enio Jelihovschi <eniojelihovs@gmail.com>
-        José Cláudio Faria <joseclaudio.faria@gmail.com>
-        Ivan Bezerra Allaman <ivanalaman@gmail.com>
+Version: 1.2-6
+Date: 2015-09-21
+Author: Enio Jelihovschi, José Cláudio Faria and Ivan Bezerra Allaman
 Maintainer: Ivan Bezerra Allaman <ivanalaman@gmail.com>
 Depends: R (>= 2.6.0), stats, base
-Description: Division of an ANOVA experiment treatment means into
-        homogeneous distinct groups using the clustering method of
-        Scott & Knott
+Description: Division of an ANOVA experiment treatment means into homogeneous distinct groups using the clustering method of Scott & Knott.
 License: GPL (>= 2)
 URL: https://github.com/jcfaria/ScottKnott, http://nbcgib.uesc.br/lec/software/pac-r/scottknott
 Encoding: latin1
diff --git a/NAMESPACE b/NAMESPACE
index 08069fe..2a837e6 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -8,3 +8,15 @@ exportPattern(".")
 import(
   stats
 )
+
+# S3 methods
+S3method(plot,SK)
+S3method(SK,default)
+S3method(SK,aov)
+S3method(SK,aovlist)
+S3method(SK.nest,aov)
+S3method(SK.nest,aovlist)
+S3method(SK.nest,default)
+S3method(SK,nest)
+S3method(summary,SK.nest)
+S3method(summary,SK)
diff --git a/R/SK.nest.aov.R b/R/SK.nest.aov.R
index f733088..72ba478 100644
--- a/R/SK.nest.aov.R
+++ b/R/SK.nest.aov.R
@@ -74,10 +74,10 @@ SK.nest.aov <- function(x,
                      m.inf[,3][ord])
 
       tab <- mt$tables[whichn][[whichn]]  
-    } else if(length(nfa[grep('[:punct:]',
+    } else if(length(nfa[grep('[[:punct:]]',
                               nfa)]) == 1 &&
 
-              which == nfa[grep('[:punct:]',
+              which == nfa[grep('[[:punct:]]',
                                 nfa)]) { 
       r <- mt$n[names(mt$tables)][[which]] # groups and its number of replicates
 
diff --git a/inst/CITATION b/inst/CITATION
index 94f8933..a5543e3 100644
--- a/inst/CITATION
+++ b/inst/CITATION
@@ -1,5 +1,3 @@
-citHeader("To cite ScottKnott in publications use:")
-
 citEntry(entry  = "Article",
   title         = "ScottKnott: A Package for Performing the Scott-Knott Clustering Algorithm in R.",
   author        = personList(as.person("Enio G. Jelihovschi"),
@@ -16,7 +14,9 @@ citEntry(entry  = "Article",
   paste("Enio G. Jelihovschi, José C. Faria, and Ivan Bezerra Allaman (2014).",
    "ScottKnott: A Package for Performing the Scott-Knott Clustering Algorithm in R.", 
    "Trends in Applied and Computational Mathematics 15(1), 3-17.",
-   "URL http://www.sbmac.org.br/tema/seer/index.php/tema/article/view/646/643.")
+   "URL http://www.sbmac.org.br/tema/seer/index.php/tema/article/view/646/643."),
+
+  header       = "If you use ScottKnott package please cite:" 
   )
 
 citFooter("Lots of time and effort were invested in creating ScottKnott package.",