Kedrova, L., J. Saveljev, T. Sheshegova, I. Shirokhih, and E. Lisitsyn. 2003. “Selection of Winter Rye (Secale Cereale L.) for Aluminum and Acid Resistance”. Plant Breeding and Seed Science 48 (December):163-68. http://ojs.ihar.edu.pl/index.php/pbss/article/view/746.