Segura, M., Etxaleku, N., Castillo, Á., Salazar, M., & Alvarado, A. (2005). Effect of P fertilization on the growth of Alnus acuminata plantations at Andisols of the Virilla river watershed, Costa Rica.

Segura, Manuel, Néstor Etxaleku, Álvaro Castillo, Marlon Salazar, och Alfredo Alvarado. Effect of P Fertilization On the Growth of Alnus Acuminata Plantations At Andisols of the Virilla River Watershed, Costa Rica. 2005.

Segura, Manuel, et al. Effect of P Fertilization On the Growth of Alnus Acuminata Plantations At Andisols of the Virilla River Watershed, Costa Rica. 2005.