Yousefzadeh, H., Rajaei, R., Larsen, B., Bina, H. and Kozlowski, G. (2020) “S-allele frequency and genetic diversity of Malus orientalis Uglitzk along an altitudinal gradient in the Hyrcanian forest”, Forest Systems, 29(2), p. e015. doi: 10.5424/fs/2020292-15846.