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by Lammer, Helmut; Lammer, Marion
by Lammer, Helmut; Khodachenko, Maxim
by Blanc, Michel; Herczeg, Gregory J.; Sterken, Veerle; et al.
by Helmut Lammer
by Bauer, S. J.; Lammer, Helmut
by Bauer, Siegfried; Lammer, Helmut
by Lammer, Helmut; Kulikov, Yuri N.
by Siegfried Bauer; Helmut Lammer