“DETERMINATION OF PHENOLIC COMPOUNDS AND WATER-SOLUBLE VITAMINS IN THE EXTRACT OF A POPLAR (POPULUS ALBA) AND WILLOW (SALIX) MIXTURE BY HPLC METHOD AND EVALUATION OF THEIR BIOLOGICAL SIGNIFICANCE”. 2026. Eureka Journal of Physical and Chemical Research 2 (1): 27-39. https://eurekaoa.com/index.php/1/article/view/265.