00748nam0-22002531i-450-990001167120403321000116712FED01000116712(Aleph)000116712FED0100011671220000920d1980----km-y0itay50------baengSingular system of differential equationsS.L. Campbell.San Francisco [etc.]Pitman1980Research notes in mathematics40Campbell,Stephen La Vern<1945- >104577ITUNINARICAUNIMARCBK990001167120403321C-2-(4020056MA1MA1Singular system of differential equations345536UNINAING01