Barroetaveña, C., D. B. Martínez, and M. Rajchenberg. “Influence of the Fertilization Regime and the Time of Inoculum Application in the Mycorrhization Rate of Pinus Ponderosa in Nursery”. BOSQUE, vol. 28, no. 3, Dec. 2007, pp. 226-33, doi:10.4067/s0717-92002007000300007.