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by Hecke, E. T.; Brauer, G. R.; Goldman, J. R.; et al.
by Harder, Gunter
by Harder, Gunter; Diederich, Klas
by Harder, Guenter
by Harder, Günter; Dietrich, H.
by Ken Brown; Ken R. Goodearl
by Mathias Drton; Bernd Sturmfels; Seth Sullivant
by Günter Harder
by Adcock, Steve
by Brueckner, Jan K.