Waga, Jacek, et al. “Polymorphism of Gliadins and HMW Glutenins and Variability in Quality Traits in Hybrid Genotypes of Spelt and Common Wheat ”. Bulletin of Plant Breeding and Acclimatization Institute, no. 253, Sept. 2009, pp. 103-16, doi:10.37317/biul-2009-0026.