Кутовенко, В.Б., Костенко, Н.П. and Литвин, І.В. 2017. Morphological features and productivity of cutting lettuce varieties (<i>Lactuca sativa</i> L. var. <i>secalina</i>) of Dutch breeding in the northern part of the Forest-Steppe zone of Ukraine. Plant varieties studying and protection. 13, 4 (Dec. 2017), 403–408. DOI:https://doi.org/10.21498/2518-1017.13.4.2017.117749.