"Boundary element method"@en . "Taylor series"@en . . "Gauss quadrature"@en . "Hadrien" . . "Ill-posed problems"@en . "Helmholtz equation"@en . "Integral equations"@en . <0009-0005-1742-9828> . "Singular value decomposition"@en . . "Homogeneous functions"@en . . "Near-singular integrals"@en . "Passive imaging"@en . "Singular integrals"@en . "Inverse acoustic scattering problem"@en . "Montanelli" . "Hadrien Montanelli" . "Linear sampling method"@en . "Continuation approach"@en . . "2e93b493b2c578e182b7bab033273b7f" . "Tikhonov regularization"@en .