Янішевський, Л.І., Маційчук, В.М. and Рибак, М.Ф. 2007. Fertilization - as productive economic method for adjustment of potential possibilities of the fiber flax varieties. Plant varieties studying and protection. 5 (Jun. 2007), 74–82. DOI:https://doi.org/10.21498/2518-1017.5.2007.66607.