1. A.C. Kak, M. Slaney, Principles of Computerized Tomographic Imaging (IEEE Press, New York, 1988), 327 pp
2. V. Clausnitzer, J.W. Hopmans, Adv. Water Res. 22, 577 (1999)
3. S. Crestana, S. Mascarenhas, R.S. Pozzi-Mucelli, Soil Sci. 140, 326 (1985)
4. S. Crestana, R. Cesareo, S. Mascarenhas, Soil Sci. 142, 56 (1986)
5. S. Crestana, P.E. Cruvinel, C.M.P. Vaz, R. Cesareo, S. Mascarenhas, K. Reichardt, Rev. Bras. Cienc. Solo 16, 161 (1992)