Pueppke, S. G., Bolaños-Vásquez, M. C., Werner, D., Bec-Ferté, M., Promé, J., & Krishnan, H. B. (1998). Release of Flavonoids by the Soybean Cultivars McCall and Peking and Their Perception as Signals by the Nitrogen-Fixing Symbiont Sinorhizobium fredii. American Society of Plant Physiologists.

Pueppke, Steven G., Maria Cristina Bolaños-Vásquez, Dietrich Werner, Marie-Pierre Bec-Ferté, Jean-Claude Promé, a Hari B. Krishnan. Release of Flavonoids By the Soybean Cultivars McCall and Peking and Their Perception As Signals By the Nitrogen-Fixing Symbiont Sinorhizobium Fredii. American Society of Plant Physiologists, 1998.

Pueppke, Steven G., et al. Release of Flavonoids By the Soybean Cultivars McCall and Peking and Their Perception As Signals By the Nitrogen-Fixing Symbiont Sinorhizobium Fredii. American Society of Plant Physiologists, 1998.