K. D. Sautter, J. A. Motta Neto, A. de Moraes, H. R. dos Santos, and P. J. Ribeiro Júnior, “Population of Oribatei and Collembola in pastures for reclamation of degraded lands in a schist mine”, PAB, vol. 33, no. 9, pp. 1509–1513, Sep. 1998.