C. Escobar, Y. Horna, C. Carreño, and G. Mendoza, “Characterization of native strains of Azotobacter spp. and its effect on growth of Lycopersicon esculentum Mill. ‘tomato’ in Lambayeque”, Sci. agropecu, vol. 2, no. 1, pp. 39–49, Feb. 2011, doi: 10.17268/sci.agropecu.2011.01.05.