Haradean, J. A., T. Ralph-Epps, Z. Whiteacre, S. Neumann, and D. M. Becker. “Mixtures of Mycorrhizal Fungi Improve Growth of Lactuca Sativa and Reduce Levels of Zinc in Contaminated Soil”. Fine Focus, vol. 5, no. 1, Oct. 2019, pp. 65-74, doi:10.33043/FF.5.1.65-74.