1. Bates, LS., Waldes, R.P., Teare, T.D., 1973. Rapid determination of free proline for water stress studies. Plant Soil 39, 205–207.
2. Casanovas, E.M., Barassi, CA., Sueldo, R.J., 2000. Azospirillum inoculation of maize seed during imbibition. Cereal Res. Comm. 28, 25–32.
3. Casanovas, E.M., Barassi, CA., Sueldo, R.J., 2002. Azospirillum inoculation mitigates water stress effects in maize seedlings. Cereal Res. Comm. 30, 343–350.
4. Fages, J., 1994. Azospirillum inoculants and field experiments. In Azospirillum-plant associations, Okon, Y. (ed.), CRC Press, Boca Raton, 87–110.
5. Gardner, F.P., Pearce, R.B., Mitchel, R.L. 1985. Ch.4. Water relations. In Physiology of crop plants, Gardner, F.P., Pearce, R.B., Mitchel, R.L. (eds.), Iowa State University Press, Ames, 76–97.