Andrejiová, Alena, Samuel Adamec, Alžbeta Hegedűsová, Ondrej Hegedűs, and Robert Rosa. “Verification of the Humic Substances and PGPB Biostimulants Beneficial Effects on the Potato Yield and Bioactive Substances Content”. Potravinarstvo Slovak Journal of Food Sciences 17 (January 10, 2023): 1–15. Accessed April 18, 2024. https://potravinarstvo.com/journal1/index.php/potravinarstvo/article/view/1805.