1. Department of Agrotechnology of Useful Plants, Curator of the Linen Collection, Institute of Natural Fibres and Medicinal Plants – National Research Institute (Instytut Włókien Naturalnych i Roślin Zielarskich – Państwowy Instytut Badawczy), Poznań, Poland
2. Department of Breeding and Botany of Useful Plants, Institute of Natural Fibres and Medicinal Plants – National Research Institute (Instytut Włókien Naturalnych i Roślin Zielarskich – Państwowy Instytut Badawczy), Plewiska, Poland
3. Faculty of Mathematics and Computer Science, Adam Mickiewicz University, Poznań, Poland