Fix getting second author initial
diff --git a/xslt/epub2i5.xsl b/xslt/epub2i5.xsl
index c2da43a..ee783b3 100644
--- a/xslt/epub2i5.xsl
+++ b/xslt/epub2i5.xsl
@@ -187,7 +187,7 @@
<xsl:variable name="lastname_aut1"
select="upper-case(substring(normalize-space(substring-before(substring-before($autor,';'),',')), 1, 1))"/>
<xsl:variable name="lastname_aut2"
- select="upper-case(substring(normalize-space(substring-before(substring-before(substring-after($autor, ';'),';'),',')), 1, 1))"/>
+ select="upper-case(substring(normalize-space(substring-before(substring-before(substring-after($autor, '; '),';'),',')), 1, 1))"/>
<xsl:value-of select="concat($lastname_aut1, $lastname_aut2)"/>
</xsl:when>
<xsl:otherwise>