TY - JOUR T1 - Dual reciprocity boundary element method solution of the Cauchy problem for Helmholtz-type equations with variable coefficients JO - Journal of Sound and Vibration PY - 2006/10/24 AU - Marin L AU - Elliott L AU - Heggs PJ AU - Ingham DB AU - Lesnic D AU - Wen X ED - DO - DOI: 10.1016/j.jsv.2006.03.045 PB - Elsevier BV VL - 297 IS - 1-2 SP - 89 EP - 105 Y2 - 2025/08/21 ER -