1. 1. Badalov, P. P. (1983). The use of hybridization and apomixis methods to obtain promising walnut forms. Lesnoe Khozyaystvo [Forestry], 12, 24-25. (in Russian)
2. 2. Badalov, P. P. (1987). Biologicheskie osnovy kultury orekhov roda Juglans v stepnoy chasti Ukrainy [Biological bases of the culture of walnut of the genus Juglans in the steppe part of Ukraine] (Extended Abstract of Doct. Agric. Sci. Diss.). Ukrainian Agr. Acad. Kyiv. (in Russian)
3. 3. Badalov, P. P., & Badalov, К. P. (2010). The use of apomixis in the genera Quercus L. and Juglans L. to obtain genetically improved homozygous seed material. Lisivnytstvo i Ahrolisomelioratsiia [Forestry and Agroforestry], 117, 206-212. (in Russian)
4. 4. Badalov, P. P., & Malytskyy, І. V. (1999). Some results of breeding of interspecific hybrids of Juglans L. on growth rate and fruit quality. Lisivnytstvo i Ahrolisomelioratsiia [Forestry and Agroforestry], 96, 63-65. (in Ukrainian)
5. Phylogeographic breaks within Asian butternuts indicate the existence of a phytogeographic divide in East Asia;Bai;New Phytologist,2016