Gut, Magdalena, Przemysław Szecówka, and Andrzej Bichoński. 2012. “Selected Traits of Spring Wheat in Polish Climatic Conditions. Part 1. The Traits of Yield Components and Basic Technological Parameters”. Plant Breeding and Seed Science 66 (August):29-38. http://ojs.ihar.edu.pl/index.php/pbss/article/view/314.