E. Garcia-del-Rey, R. Otto, ja J. M. Fernandez-Palacios, ”Medium-term response of breeding Blue Chaffinch Fringilla teydea teydea to experimental thinning in a Pinus canariensis plantation (Tenerife, Canary Islands)”, Ornis Fenn, vsk. 87, nro 4, ss. 180–188, joulu 2010.