@articleOevel_Fuchssteiner_Blaszak_1990, title=Action-Angle Representation of Multisolitons by Potentials of Mastersymmetries, volume=83, journal=Prog. Theor. Phys., author=Oevel, Gudrun and Fuchssteiner, Benno and Blaszak, M., year=1990, pages=395–413 
LibreCat: /record/17175

@bookOevel_1990, place=Universität-Gesamthochschule Paderborn, title=Reduktion integrabler Systeme auf ihre Multisoliton Mannigfaltigkeiten, author=Oevel, Gudrun, year=1990 
LibreCat: /record/17176

@articleFuchssteiner_Oevel_1989, title=Geometry and Action-Angle Variables of Multi Soliton Systems, number=1, journal=Rev. Math. Phys., author=Fuchssteiner, Benno and Oevel, Gudrun, year=1989, pages=415–479 
LibreCat: /record/17162