by VOGEL, JUERGEN, HOELAND, WOLFRAM. ER.NAT., DDR 6902 JENA-LOBEDA, DD, VOGEL, WERNER, DR.HABIL., DDR 6900 JENA, DD
Year of Publication 10.03.1988

by VOGEL,WERNER,DR.HABIL, HOELAND,WOLFRAM,.ER.NAT, VOGEL,JUERGEN
Year of Publication 01.08.1985