GAILING, Oliver. “Strategies to Identify Adaptive Genes in Hybridizing Trees Like Oaks and Poplars”. Notulae Botanicae Horti Agrobotanici Cluj-Napoca 42, no. 2 (December 2, 2014): 299-309. Accessed October 19, 2019. https://notulaebotanicae.ro/index.php/nbha/article/view/9739.