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Error estimate of BDF2 scheme on a Bakhvalov-type mesh for a singularly perturbed Volterra integro-differential equation

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18

547-561

55

A novel parameter-uniform numerical method for a singularly perturbed Volterra integro-differential equation

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12

56

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57

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The Characterization of Graphs with No 2-connected Spanning Subgraph of V8 as a Minor

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Acta Mathematicae Applicatae Sinica

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59

Unit group structure of the quotient ring of a

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63

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