2Baker A J M, brooks R R, Pease A J, et al. Studies on copper and cobalt tolerance in three closey related taxa with in the genus Science L. from Zaire[J]. Plant and Soil, 1983, 73: 377-385.
3Baker A J M, McGrath S P, Sidolic M D, et al. The possibility of in situ heavy metal decotam inatim of polluted soils using crops of metal-accumulating plants[J]. Resourse, Conservation and Recycling, 1994, 11: 41-49.
4Robinson R H, Leblanc M, Daniel P, et al. The potential of Thlaspi caerulescens for phytorem ediation of contam inated soils[J]. Plant and Soil, 1998, 203: 47-56.