1. Angelocci LR (2002) Água na planta e trocas gasosas/energéticas com a atmosfera: introdução ao tratamento biofísico. Angelocci LR, Piracicaba
2. Bacchi OOS, Reichardt K, Calvache M (2002) Neutron and gamma probes: their use in agronomy. International Atomic Energy Agency, Vienna
3. Bakker G, van Der Ploeg MJ, de Rroij GH, Hoogendam CW, Gooren HPA, Huiskes C, Koopal LK, Kruidhof H (2007) New polymer tensiometers: measuring matric pressures down to the wilting point. Vadose Zone J 6:196–202
4. Blake GR, Hartge KH (1986) Bulk density. In: Klute A (ed) Methods of soil analysis. American Society of Agronomy; Soil Science Society of America, Madison, pp 363–375
5. Campbell GS, Gardner WH (1971) Psychrometric measurement of soil water potential: temperature and bulk density effect. Soil Sci Soc Am Proc 35:8–12