K. KovácsResearch Group for Nuclear Techniques in Structural Chemistry, Hungarian Academy of Sciences, Department of Nuclear Chemistry, Eötvös Loránd University H-1518, Budapest 112, P.O. Box 32, Hungary
A. KamnevLaboratory of Biochemistry of Plant-Bacterial Symbioses, Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 410049 Saratov, Russia
A. ShchelochkovLaboratory of Biochemistry of Plant-Bacterial Symbioses, Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 410049 Saratov, Russia
E. KuzmannResearch Group for Nuclear Techniques in Structural Chemistry, Hungarian Academy of Sciences, Department of Nuclear Chemistry, Eötvös Loránd University H-1518, Budapest 112, P.O. Box 32, Hungary
H. Medzihradszky-SchweigerResearch Group for Nuclear Techniques in Structural Chemistry, Hungarian Academy of Sciences, Department of Nuclear Chemistry, Eötvös Loránd University H-1518, Budapest 112, P.O. Box 32, Hungary
A. VértesResearch Group for Nuclear Techniques in Structural Chemistry, Hungarian Academy of Sciences, Department of Nuclear Chemistry, Eötvös Loránd University H-1518, Budapest 112, P.O. Box 32, Hungary