Analysis of virC, an operon involved in the secretion of Yop proteins by Yersinia enterocolitica57, Michiels, T., Vanooteghem J.C., C. de Rouvroit Lambert, China Bernard, Gustin A., Boudry P., and Cornelis G.R. , J.Bacteriol., 0/8/1991, Volume 173, Issue 16, Number 5009, p.4994 - 5009, (1991)