How I can apply this template that group by tags, but instead of comme
one parameter, commes more than one?

<xsl:stylesheet version="2.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns="http://bibtexml.sf.net/"
    xmlns:b="http://bibtexml.sf.net/">

    <xsl:strip-space elements="*"/>
    <xsl:output indent="yes" omit-xml-declaration="yes"/>

    <xsl:template match="*">
        <xsl:copy>
            <xsl:copy-of select="@*"/>
            <xsl:for-each-group select="node()"
group-by="local-name()=$name">
                <xsl:choose>
                    <xsl:when test="current-grouping-key()">
                        <!--<xsl:element name="{$name}">-->
                        <xsl:element name="{$name}">
                            <xsl:for-each select="current-group()">
                                <xsl:apply-templates/>
                                <xsl:if test="position()!=last()">
and <xsl:if>
                            </xsl:for-each>
                        </xsl:element>
                    </xsl:when>
                    <xsl:otherwise>
                        <xsl:apply-templates select="current-group()"/>
                    </xsl:otherwise>
                </xsl:choose>
            </xsl:for-each-group>
        </xsl:copy>
    </xsl:template>