1. Lithuanian Agricultural Advisory Service, Stoties Str. 5, Kėdainiai District, 58343 Akademija, Lithuania
2. Faculty of Engineering, Agriculture Academy, Vytautas Magnus University, K. Donelaičio Str. 58, 44248 Kaunas, Lithuania
3. Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, Kaunas Str. 30, Kaunas District, 54333 Babtai, Lithuania
4. Botanical Garden, Vytautas Magnus University, K. Donelaičio Str. 58, 44248 Kaunas, Lithuania
5. Faculty of Forest Sciences and Ecology, Agriculture Academy, Vytautas Magnus University, K. Donelaičio Str. 58, 44248 Kaunas, Lithuania