1. Hooykaas PJJ, Schilperoort RA (1992) Agrobacterium and plant genetic engineering. Plant Mol Biol 19: 15–38.
2. Winans SC (1992) Two way chemical signalling in Agrobacterium-plant interactions. Microbiol Rev 56: 12–31.
3. Dessaux Y, Petit A, Tempé J (1992) Opines in Agrobacterium biology. In: Verma DPS (ed) Molecular Signals in Plant-Microbe Communications, pp. 109–136. Boca Raton, FL: CRC Press.
4. Gelvin SB (1992) Chemical signaling between Agrobacterium and its plant host. In: Verma DPS (ed) Molecular Signals in Plant-Microbe Communications, pp. 137–167. Boca Raton, FL: CRC Press.
5. Lioret C (1957) Les acides aminés libres des tissus de crown gall. Mise en évidence d’un acide aminé particulier à ces tissus. CR Hebd Acad Sci 244: 2171–2174.