1.
Valtcho D. Zheljazkov SS, Schlegel V. Influence of winter stress and plastic tunnels on yield and quality of spinach, pak choi, radish, and carrot [Internet]. Emirates Journal of Food and Agriculture [Internet]. 31May2018 [cited 9Apr.2020];30(5):357-63. Available from: http://ejfa.me/index.php/journal/article/view/1687