00759nam0-22002531i-450-990001167100403321000116710FED01000116710(Aleph)000116710FED0100011671020000920d1982----km-y0itay50------baengSingular systems of differential equations II.di Campbell S.L.San Francisco [etc.]Pitman1982Research notes in mathematics61Campbell,Stephen La Vern<1945- >104577ITUNINARICAUNIMARCBK990001167100403321C-2-(6121086MA1MA1Singular systems of differential equations II345534UNINAING01