Черчель, В. Ю., В. А. Марочко, and М. М. Таганцова. “Index Validation for Ratio of Maize Hybrids Upper Ear Attachment to Plant Height Thereof (Zea Mays L.)”. Plant varieties studying and protection, no. 2(23) (April 10, 2014): 40–44. Accessed February 4, 2023. http://journal.sops.gov.ua/article/view/56127.