<ref xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" id="R20"><label>20</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Gallucci</surname><given-names>MN</given-names></name><name><surname>Oliva</surname><given-names>M</given-names></name><name><surname>Casero</surname><given-names>C</given-names></name><name><surname>Dambolena</surname><given-names>J</given-names></name><name><surname>Luna</surname><given-names>A</given-names></name><name><surname>Zygadlo</surname><given-names>J</given-names></name><name><surname>Demo</surname><given-names>M</given-names></name></person-group><article-title>Antimicrobial combined action of terpenes against the food-borne microorganisms Escherichia coli, Staphylococcus aureus and Bacillus cereus</article-title><source>Flavour and Fragrance Journal</source><year>2009</year><volume>24</volume><issue>6</issue><fpage>348</fpage><lpage>354</lpage></element-citation></ref>