Peltonen-Sainio, Pirjo, and Tiina Pekkala. “Numeric Codes for Developmental Stages of Oat Apex in the Growing Conditions of Southern Finland”. Agricultural and Food Science 2, no. 4 (July 1, 1993): 329–336. Accessed November 26, 2024. https://journal.fi/afs/article/view/72655.