Galera, H., Ratyńska, H., (1999). Acta Societatis Botanicorum Poloniae 68(3), 227-236. English language
Bello, G. M. dal, Perelló, A. E., Mónaco, C. I., (1993). Agronomie 13(2), 121-124. English language
McConnell, J., Muniappan, R., (1991). Micronesia(No. 3, Supplement), 47-49. English language
Inserra, R. N., Dunn, R. A., McSorley, R., Langdon, K. R., Richmer, A. Y., (1989). Nematology Circular (Gainesville)(No. 171), 4 pp. English language
USA, University of Illinois (1987) External factsheets, University of Illinois, 8 pp., English language
Oetting, R. D., Beshear, R. J., Journal of the Georgia Entomological Society 15(4), 475-479. English language