Tanner, M., Inlameia, O., Michel, A., Maxlhuza, G., Pondja, A., Fafetine, J., Macucule, B., Zacarias, M., Manguele, J., Moiane, I. C., Marranangumbe, A. S., Mulandane, F., Schönfeld, C., Moser, I., Helden, P. van, Machado, A., (2015). Transboundary and Emerging Diseases 62(6), 632-638. Wiley-Blackwell, Berlin, Germany. English language
Dickson, J. H., Rodriguez, J. C., Machado, A., (1987). Botanical Journal of the Linnean Society 95(3), 155-179. English language