Bocianowski, J., P. Szulc, K. Nowosad, and M. Rybus-Zając. “Relationships Between Selected Traits of Maize Cultivars Differing in Leaf Blade Senescence Rates”. Polish Journal of Agronomy, no. 26, Dec. 2016, pp. 9-14, https://redakcjapja.iung.pl/index.php/pja/article/view/253.