1. State Phytosanitary Administration, Division of Diagnostics, Šlechtitelů 773/23, 779 00, Olomouc, Czech Republic
2. Biology Centre, Academy of Science of the Czech Republic, v.v.i., Institute of Soil Biology, Na Sádkách 7, 370 05, České Budějovice, Czech Republic
3. Crop Research Institute, Drnovská 507, 161 06, Praha 6 - Ruzyně, Czech Republic