8F. Romero,C. Elejalde,M. N. Azpiazu. Metal plant and soil pollution indexes[J] 1987,Water, Air, and Soil Pollution(4):347~352
9M. N. Azpiazu,F. Romero,J. M. Diaz. Metal distribution and interaction in plant cultures on artificial soil[J] 1986,Water, Air, and Soil Pollution(1-2):1~26
10F. Romero,C. Elejalde,M. N. Azpiazu. Metal plant and soil pollution indexes[J] 1987,Water, Air, and Soil Pollution(4):347~352