Bonjour à tous,
dans le cadre d'un petit projet je dois réaliser une feuille de transformation XSLT qui présente des ouvrages dans leur ordre de parution

Voici une partie du fichier xml :
Code XML : Sélectionner tout - Visualiser dans une fenêtre à part
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<pulp-series-plus>
 
  <hero>&ds;</hero>
 
  <house-name by="robeson"/>
 
  <series>
    <item by="dent">
      <title><skippable>The </skippable>Annihilist</title>
      <pulp name="&dsm;" nb="22" year="1934" month="dec"/>
      <pocket-book publisher="Bantam" nb="31" year="1968" month="dec"/>
      <abstract>
        <par>
          The dread Annihilist was slaughtering the criminals of New York in
          wholesale lots. Hundreds of men were found mysteriously murdered,
          victims of the hideous pop-eyed death. The finger of suspicion
          pointed directly at one man, &ds; himself. Even as the &bzm;
          scrambled to solve the terrifying enigma, the invisible assassin
          began to play havoc with one of the humanity's most important
          secret defenses&em-dash;&ds;'s legendary crime college.
        </par>
      </abstract>
      <translation xml:lang="de" by="heinz" publisher="Pabel" nb="24" year="1974" month="oct">
        <title><skippable>Der </skippable>Superkiller</title>
      </translation>
      <translation xml:lang="fr" by="olivier" publisher="Marabout" nb="26" year="1972">
        <title><skippable>Le </skippable>destructeur</title>
      </translation>
    </item>
    <item by="dent">
      <title><skippable>The </skippable>Awful Egg</title>
      <pulp name="&dsm;" nb="88" month="jun" year="1940"/>
      <pocket-book publisher="Bantam" nb="92" month="oct" year="1978"/>
      <abstract>
        <par>
          From the frozen heart of the American continent comes a nameless
          prehistoric terror of unspeakable savagery, leaving a broken trail of
          mangled victims that shocks and baffles the world. Only the superman
          &bzm; can meet this horrifying menace on its own bloody
          ground&em-dash;and uncover the even greater evil that spawned it.
        </par>
      </abstract>
      <translation xml:lang="de" by="kurtz" publisher="Pabel" nb="83" year="1979" month="apr">
        <title><skippable>Das </skippable>Höhlenmonster</title>
      </translation>
    </item>
    <item by="dent">
      <title><skippable>The </skippable>Boss of Terror</title>
      <pulp name="&dsm;" nb="87" year="1940" month="may"/>
      <pocket-book publisher="Bantam" nb="85" year="1976" month="nov"/>
      <abstract>
        <par>
          Men by the name of Smith were being knocked off all over town. And
          they were all killed by lightning&em-dash;lightning that entered a
          room without leaving any marks, on a day when there was no lightning.
          As the &bzm; penetrated ever closer to the heart of this mystery, he
          was scared. For he knew he was closer to death that possibly at any
          other time in his hair-raising career.
        </par>
      </abstract>
      <translation xml:lang="de" by="kurtz" publisher="Pabel" nb="63" year="1977" month="oct">
        <title><skippable>Der </skippable>Boss des Schrekens</title>
      </translation>
    </item>
  </series>
</pulp-series-plus>

Toutefois, je ne parviens pas à afficher les résultats en triant sur les mois (jan, feb etc) en plus de l'année.

Voici mon xslt qui m'affiche les ouvrages par année de parutaion :
Code XSL : Sélectionner tout - Visualiser dans une fenêtre à part
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<?xml version="1.0" encoding="ISO-8859-1"?>
 
<xsl:stylesheet version="2.0" id="lpro-savage"
                xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                exclude-result-prefixes="xsd">
 
    <xsd:month name="jan" order="01"/>
	<xsd:month name="feb" order="02"/>
	<xsd:month name="mar" order="03"/>
	<xsd:month name="apr" order="04"/>
	<xsd:month name="may" order="05"/>
	<xsd:month name="jun" order="06"/>
	<xsd:month name="jul" order="07"/>
	<xsd:month name="aug" order="08"/>
	<xsd:month name="sep" order="09"/>
	<xsd:month name="oct" order="10"/>
	<xsd:month name="nov" order="11"/>
	<xsd:month name="dec" order="12"/>
 
	<xsl:output method="text"/>
 
	<xsl:strip-space elements="*"/>
 
	<xsl:variable name="eol" select="'
'"/>
 
	<xsl:template match="pulp-series-plus">
		<xsl:apply-templates select="series"/>
	</xsl:template>
 
	<xsl:template match="series">
		<xsl:apply-templates select="item[pulp]">
			<xsl:sort select="pulp/@year" data-type="number" order="ascending"/>
		</xsl:apply-templates>
	</xsl:template>
 
	<xsl:template match="item">
		<xsl:apply-templates select="pulp"/>
		<xsl:if test="not(pulp[title])">
			<xsl:apply-templates select="title"/>
		</xsl:if>
		<xsl:value-of select="$eol"/>
	</xsl:template>
 
	<xsl:template match="pulp">
		<xsl:value-of select="$eol"/>
		<xsl:value-of select="@nb,$eol"/>
		<xsl:value-of select="@name,$eol"/>
		<xsl:value-of select="@year,@month,$eol"/>
		<xsl:value-of select="title"/>
	</xsl:template>
 
	<xsl:template match="title">
		<xsl:apply-templates/>
	</xsl:template>
 
</xsl:stylesheet>

J'aurais besoin d'un petit coup de pouce pour y parvenir.
Je vous remercie.