1

常微分方程学习指导书第2版(东北师大第三版)_password_removed.pdf
小恐龙
2

Introduction to Equation Solving and Parameter Fitting
Gwendal LeMasson; Reinoud Maex
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Theorems on ball mean values for solutions of the Helmholtz equation on unbounded domains
Ochakovskaya; Oksana A