Cường, B. V., and T. T. Chính. “THE INFLUENCE OF PHOSPHOROUS AND NITROGEN CONTENT IN SOIL ON THE SYMBIOSIS ABILITY OF ARBUSCULAR MYCORRHIZAS FUNGI IN THE HOST PLANT ROOT, AND THE EFFECT OF LEAD REMOVAL FROM SOIL BY MAIZE”. Vietnam Journal of Science and Technology, vol. 48, no. 1, June 2012, doi:10.15625/0866-708X/48/1/1088.