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. C. Fig, Real and imaginary parts of the shaking-rocking coupling element of the impedance matrix: condensation of the FEM-BEM model (solid line), condensation of the hidden variables model (dashed line), 0.95-confidence bounds for the 1000

. C. Fig, Real and imaginary parts of the shaking-pumping coupling element of the impedance matrix: condensation of the FEM-BEM model (solid line), condensation of the hidden variables model (dashed line), 0.95-confidence bounds for the 1000