Co-Authors:
Bobev, S.G., Agricultural University, Department of Plant Pathology, Mendeleev 12, Plovdiv 4000, Bulgaria
Zveibil, A., Agricultural University, Department of Plant Pathology, Mendeleev 12, Plovdiv 4000, Bulgaria
Freeman, S., Agricultural University, Department of Plant Pathology, Mendeleev 12, Plovdiv 4000, Bulgaria