Evaluation of laser induced breakdown spectroscopy for the determination of micronutrients in plant materials - Trevizan, Lilian Cristina; Santos Junior, Dário; Samad, Ricardo Elgul; Vieira Junior, Nilson Dias; Nunes, Lidiane Cristina; Rufini, Iolanda Aparecida; Krug, Francisco José (Spectrochimica Acta Part B: Atomic Spectroscopy, 2009)