Reference
A. Rüegsegger, Ch. Brunhold (1992): Effect of Cadmium and/or Kernels or Shoots on the Levels of Cysteine, ?-Glutamyl-cysteine, Glutathione and TCA-soluble Thioles in Maize Seedlings. – Phyton, Annales Rei Botanicae, Horn – 32_3: 109 - 112.