1. Research Inst. of Horticulture; Dept. of Fruit and Vegetable Storage and Processing; Konstytucji 3 Maja 1/3 Street 96-100 Skierniewice Poland
2. Faculty of Horticulture, Biotechnology and Landscape Architecture, Dept. of Fruit Growing; Warsaw Univ. of Life Sciences; Nowoursynowska 166 Street 02-787 Warsaw Poland