Research papers
Hempel, T., Hempel, M., 1984: Storage of gerbera propagated in vitro. Proceedings of International Symposium "Plant Tissue and Cell Culture Application to Crop Improvement", Olomouc, Czechoslovakia, 24-29 September 1984
Hempel, T., Hempel, M., 1985: Long-term storage of gerbera rooted in vitro. Symposium "In vitro Problems Related to Mass Propagation of Horticultural Plants", 16-20 September 1985, Gembloux, Belgium
Hempel, T., Hempel, M., 1985: The influence of temperature, period and mode of storage of gerbera propagated in vitro on the quality of a stored material. Prace Instytutu Sadownictwa i Kwiaciarstwa w Skierniewicach, ser.B, tom 10, 85-90
Other publications
Hempel, T., Hempel, M., 1984: Przechowywanie sadzonek gerbery otrzymanych metoda kultur tkankowych. (Storage of in vitro grown gerbera).Ogrodnictwo 7, 16-17 (in Polish)