García Cruzatty, L., M. Rivero, G. Vásconez, S. Peñarrieta, and F. Droppelmann. “Reproductive Efficiency and Pollen Production in a Nothofagus Alpina Clonal Seed Orchard”. Bosque, vol. 38, no. 1, May 2017, pp. 133-9, doi:10.4067/S0717-92002017000100014.