Viškelis, J., N. Uselis, M. Liaudanskas, J. Lanauskas, P. Bielicki, T. Univer, J. Lepsis, and D. Kviklys. “Location Effects across Northeastern Europe on Bioactive Compounds in Apple Fruit”. Agricultural and Food Science, vol. 28, no. 2, June 2019, pp. 93–100, doi:10.23986/afsci.79458.