NYÉKI, J.; SOLTÉSZ, M.; IVÁNCSICS, J. Self fertility of pear varieties conditioned by natural self pollination (autogamy). International Journal of Horticultural Science, [S. l.], v. 6, n. 1, p. 110–113., 2000. DOI: 10.31421/IJHS/6/1/79. Disponível em: https://ojs.lib.unideb.hu/IJHS/article/view/79. Acesso em: 15 aug. 2022.