Applied Natural Sciences 2023 : The 8th International Scientific Conference, 18 - 20 September 2023, Donovaly : book of abstracts = ANS 2023. Trnava : University of Ss. Cyril and Methodius in Trnava, 2023. 94 p. Available on Internet: https://ans2023.ucm.sk/ ISBN 978-80-572-0357-5