Salgado Salomón, M. E., Rajchenberg, M., & Barroetaveña, C. (2009). Evaluation of the mycorrhizal condition of ponderosa pine seedlings produced with high fertilization levels and lacking mycorrhizal management. Bosque, 30(3), 127–134. https://doi.org/10.4067/s0717-92002009000300002