L. L. Garcia, H. P. Haag, K. Minami, and J. R. Sarruge, “ Mineral nutrition of vegetable crops. XL. concentration and accumulation of mícronutrients by lettuce (Lactuca sativa L.) Cv. Brasil 48 and Clause’s Aurelia ”, An. Esc. Super. Agr. Luiz de Queiroz, vol. 39, no. 1, pp. 485–504, Jan. 1982, doi: 10.1590/S0071-12761982000100028.