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2. Approximate solution of Volterra integral equations of the first kind by the quadrature method;Apartsyn;Differ. Integral Equ.,1972
3. Differential–Algebraic Equations and Their Connections to Optimization;Bock,1996
4. Regular and Singular Systems of Ordinary Differential Equations;Boyarintsev,1980
5. Numerical Solution of Initial-Value Problems in Differential–Algebraic Equations;Brenan,1996