Lobo, E., M. García, H. Moscoso, S. Martínez, and S. Kleven. “Short Communication. Strain Heterogeneity in Mycoplasma Pullorum Isolates Identified by Random Amplified Polymorphic DNA Techniques”. Spanish Journal of Agricultural Research, Vol. 2, no. 4, Dec. 2004, pp. 500-3, doi:10.5424/sjar/2004024-116.