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diff --git a/.wordpress-org/citations-tools.php b/.wordpress-org/citations-tools.php
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+<?php
+/*
+Plugin Name: Citations tools
+Description: Some tools for scientific and editorial bloggers.
+Version: 0.3.2
+Author: Gianluigi Filippelli
+Author URI: http://dropseaofulaula.blogspot.it/
+Plugin URI: https://ulaulaman.github.io/citations-tools/
+License: GPLv2 or later
+*/
+/* ------------------------------------------------------ */
+# ---------------------------------------------------------
+
+# doi
+add_shortcode('ctdoi', 'ctdoi');
+
+ function ctdoi ($atts, $content = null) {
+
+   extract(
+      shortcode_atts(
+         array( 
+		'code' => null
+	 ),
+         $atts
+      )
+   );
+
+   $link = '<a href="https://dx.doi.org/'.$code.'" target="doi">'.$content.'</a>';
+
+   return $link;
+}
+
+# doi resolver
+add_shortcode('ctdoiresolve', 'ctdoiresolve');
+
+ function ctdoiresolve ($atts, $content = null) {
+
+  extract(
+      shortcode_atts(
+         array( 
+		'code' => null,
+                'arxiv' => null,
+                'pdfurl' => null,
+                'archiveurl' => null
+	 ),
+         $atts
+      )
+   );
+
+   $fullCitation = null;
+   $getfile = 'https://search.crossref.org/dois?sort=score&page=1&rows=1&q='.$code;
+   $jsondata = file_get_contents($getfile);
+   $array = json_decode($jsondata,true);
+   $item=$array[0];
+   $doi = $item['doi'];
+   $coins = $item['coins'];
+   $fullCitation =$item['fullCitation'];
+
+   $citation = '<div class="paperbox">'.$fullCitation.' doi:<a href="https://dx.doi.org/'.$code.'" target="doi">'.$code.'</a>';
+
+   if ( $arxiv <> null )
+   {$citation = $citation.' (<a href="https://arxiv.org/abs/'.$arxiv.'" target="arxiv">arXiv</a>)';}
+   else
+   {$citation = $citation;}
+
+   if ( $pdfurl <> null )
+   {$citation = $citation.' (<a href="'.$pdfurl.'" target="pdf">pdf</a>)';}
+   else
+   {$citation = $citation;}
+
+   if ( $archiveurl <> null )
+   {$citation = $citation.' (<a href="'.$archiveurl.'" target="archive">archive.org</a>)';}
+   else
+   {$citation = $citation;}
+
+   $results = $citation.'</div>';
+
+   return $results;
+}
+
+# paperdata
+add_shortcode('paperdata', 'paperdata');
+
+ function paperdata ($atts, $content = null) {
+
+  extract(
+      shortcode_atts(
+         array( 
+                'auth' => null,
+                'year' => null,
+                'title' => null,
+                'journal' => null,
+                'vol' => null,
+                'issue' => null,
+                'pages' => null,
+		'code' => null,
+                'arxiv' => null,
+                'pdfurl' => null,
+                'archiveurl' => null
+	 ),
+         $atts
+      )
+   );
+  
+  $fullcitation = null;
+
+  if ( $auth <> null )
+  {$fullcitation = $fullcitation.$auth;}
+  else
+  {$fullcitation = $fullcitation;}
+
+  if ( $year <> null )
+  {$fullcitation = $fullcitation.', '.$year;}
+  else
+  {$fullcitation = $fullcitation;}
+
+  if ( $title <> null )
+  {$fullcitation = $fullcitation.', '.$title;}
+  else
+  {$fullcitation = $fullcitation;}
+
+  if ( $journal <> null )
+  {$fullcitation = $fullcitation.', <em>'.$journal.'</em>';}
+  else
+  {$fullcitation = $fullcitation;}
+
+  if ( $vol <> null )
+  {$fullcitation = $fullcitation.', vol.'.$vol;}
+  else
+  {$fullcitation = $fullcitation;}
+
+  if ( $issue <> null )
+  {$fullcitation = $fullcitation.', n.'.$issue;}
+  else
+  {$fullcitation = $fullcitation;}
+
+  if ( $pages <> null )
+  {$fullcitation = $fullcitation.', pp. '.$pages;}
+  else
+  {$fullcitation = $fullcitation;}
+
+  $citation = '<div class="paperbox">'.$fullcitation;
+
+  if ( $code <> null )
+  {$citation = $citation.' doi:<a href="https://dx.doi.org/'.$code.'" target="doi">'.$code.'</a>';}
+  else
+  {$citation = $citation;}
+
+  if ( $arxiv <> null )
+  {$citation = $citation.' (<a href="https://arxiv.org/abs/'.$arxiv.'" target="arxiv">arXiv</a>)';}
+  else
+  {$citation = $citation;}
+
+  if ( $pdfurl <> null )
+  {$citation = $citation.' (<a href="'.$pdfurl.'" target="pdf">pdf</a>)';}
+  else
+  {$citation = $citation;}
+
+  if ( $archiveurl <> null )
+  {$citation = $citation.' (<a href="'.$archiveurl.'" target="archive">archive.org</a>)';}
+  else
+  {$citation = $citation;}
+
+  $results = $citation.'</div>';
+
+  return $results;
+
+}
+/* ------------------------------------------------------ */
diff --git a/.wordpress-org/readme.txt b/.wordpress-org/readme.txt
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+++ b/.wordpress-org/readme.txt
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+=== Citations tools ===
+Contributors: ulaulaman
+Tags: doi, citations, research, blog, blogging, research blogging, arXiv
+Requires at least: 4.8.5
+Tested up to: 4.9.5
+Requires PHP: 7.0.18
+Stable tag: trunk
+License: GPLv2 or later
+License URI: http://www.gnu.org/licenses/gpl-2.0.html
+
+Developer version of the homonym plugin on Worpdress repository
+Some tools for scientific and editorial bloggers.
+
+== Description ==
+The plugin add a shortcode in order to link a paper using its doi code. You can also use an other shortcode to resolve doi code and publish a full citation apa formatted. It is also a shortcode for manual citations.
+
+## Link doi
+
+Using the standard for doi link, the plugin introduce a shortcode in order to create a link to a paper provided by doi.
+**How to use the shortcode**:
+
+[ctdoi code="..."]Title of the paper[/doi]
+
+## Doi resolver
+
+The plugin send the doi code to [Crossref Metadata Search](https://search.crossref.org/), get the information and publish a full citation in apa standard with the shortcode [ctdoiresolve ...].
+**How to use the shortcode**:
+
+[ctdoiresolve code="..."]
+
+There are also three optional parameters:
+
+[ctdoiresolve code="..." arxiv="..."]
+
+if the paper has an arXiv version
+
+[ctdoiresolve code="..." pdfurl="..."]
+
+if the paper has a free pdf version
+
+[ctdoiresolve code="..." archiveurl="..."]
+
+if the paper has a free version on [archive.org](https://archive.org/)
+
+## Manual citations
+
+There's also a shortcode for manual citations, [paperdata ...]. You can use it with the following syntax:
+
+[paperdata auth="author/s name/s" year="..." title="..." journal="..." vol="..." issue="..." pages="..." code="..."]
+
+You can also use the arxiv, pdfurl, archiveurl parameters.
+
+## Styling
+
+You can style citations adding in your css theme the class "paperdata".
+
+## External service
+
+**Digital Object Identifier**, or *DOI*, is a persistent identifier used to uniquely identify objects, standardized by the **International Organization for Standardization** (*ISO*). DOIs are mainly used to identify academic, professional, and government information, such as journal articles, research reports and data sets, official publications.
+
+***Citations tools*** uses the [CrossRef Metadata API](http://search.crossref.org/help/api) to retrieve complete publication information using the doi code as a search query. CrossRef is a part of the [doi system](https://dx.doi.org/).
+
+== Screenshots ==
+1. The doi resolver: the shortcode (up) and the results (down)
+
+== Installation ==
+1.  Extract the citations-tools.zip file and upload its contents to the /wp-content/plugins/ directory. Alternately, you can install directly from the Plugin directory within your WordPress Install.
+2. Activate the plugin through the "Plugins" menu in WordPress.
+3. Use the shortcode into your posts or pages.
+
+== Changelog ==
+* 0.3.2 add compatibility with Wordpress 4.9.5
+* 0.3.1 fix error in html script in [ctdoi] shortcode
+* 0.3 add shortcode for manual citations
+* 0.2.6.1 update readme.txt
+* 0.2.6 add archive.org link in doi resolver as shortcode's parameter
+* 0.2.5 fix error code
+* 0.2.4 changed functions names
+* 0.2.3 add pdf link in doi resolver as shortcode's parameter
+* 0.2.2 add arXiv link in doi resolver as shortcode's parameter
+* 0.2.1 add doi link in doi resolver
+* 0.2 add shortcode to resolve doi using code
+* 0.1 shortcode for doi link
diff --git a/.github/workflows/deploy.yml b/workflows/deploy.yml
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