Quantification of Listeria monocytogenes in monimally processed leafy vegetables using a combined method based on enrichment and 16S rRNA real-time PCR - Oliveira, Maria Aparecida de; Ribeiro, Eliana Guimarães Abeid; Bergamini, Alzira Maria Morato; De Martinis, Elaine Cristina Pereira (Food Microbiology, 2010)