1. http://www.fao.org/cgrfa/topics/plants/ru/.
2. Itogi Vserossiiskoi sel’skokhozyaistvennoi perepisi 2016 goda (Results of the All-Russian Agricultural Census 2016), vol. 4: Posevnye ploshchadi sel’skokhozyaistvennykh kul’tur i ploshchadi mnogoletnikh nasazhdenii i yagodnykh kul’tur (Sown Area of Agricultural Crops and Areas of Perennial Crop Plantations and Berry Crops): book 1: Ploshchadi sel’skokhozyaistvennykh kul’tur i mnogoletnikh nasazhdenii (Areas of Agricultural Crops and Areas of Perennial Crop Plantations), Moscow: Statistika Rossii, 2018.
3. Shlyavas, A.V., Sidnin, A.S., Bagmet, L.V., et al., Katalog mirovoi kollektsii VIR: yablonya (World Collection Catalog of Vavilov All-Russian Scientific Research Institute of Plant Genetic Resources: Apple), issue 890: Yablonya: sorta narodnoi selektsii, sokhranyaemye na Volgogradskoi opytnoi stantsii VIR i v gerbarii VIR (Apple Landraces Conservated at Volgograd Experiment Stations of Vavilov All-Russian Institute of Plant Genetic Resources and in Its Herbarium), St. Petersburg, 2019, pp. 7—19. https://doi.org/10.30901/978-5-907145-09-2
4. Pashkevich, V.V., Plodovodstvo Astrakhanskoi gubernii (Fruit Growing in the Astrakhan Province), St. Petersburg, 1911.
5. Malychenko, V.V., Variability of local varieties of apple trees in the centers of formation, Tr. Volgograd. Opytn. Stn. Vses. Inst. Rastenievod., 1973, no. 7, pp. 121—134.