[1] Layton JB, Ganguly S, Balakrishna C, Kane JH. A symmetric Galerkin multi-zone boundary element formulation. Int. J. Numer. Meth. Engng. 1997; 40: 2913-2931.

[2] Gray LJ, Paulino GH. Symmetric Galerkin boundary integral formulation for interface and multi-zone problems. Int. J. Numer. Meth. Engng. 1997; 40: 3085-3101.

[3] Vodicka R, Mantic V, París F. Symmetric variational formulation of BIE for domain decomposition problems in elasticity - An SGBEM approach for nonconforming discretizations of curved interfaces. Comput. Model. Eng. 2007; 17: 173–203.

[4] Perez-Gavilan JJ, Aliabadi MH. A symmetric Galerkin BEM for Multi-connected bodies: A new apprach. Eng. Anal. Boundary Elem. 2001; 25: 633-638.

[5] Panzeca T, Cucco F, Terravecchia S. Symmetric boundary element method versus finite element method. Comput. Methods Appl. Mech. Engrg. 2002; 191: 3347-3367.

[6] Panzeca T, Salerno M, Terravecchia S. Domain decomposition in the symmetric boundary element method analysis. Comput. Mech. 2002; 28: 191-201.

[7] Panzeca T, Salerno M. Macro-elements in the mixed boundary value problems. Comput. Mech. 2000; 26: 437-446.

[8] Panzeca T, Fujita Yashima H, Salerno M. Direct stiffness matrices of BEs in the Galerkin BEM formulation. Eur. J. Mech. A/Solids. 2001; 20: 277-298.

[9] Terravecchia S. Revisited mixed-value method via symmetric BEM in the substructuring approach. Eng. Anal. Boundary Elem. 2012; 36: 1865-1882.

[10] Zito L, Panzeca T, Terravecchia S. Displacement approach with external variables only for multidomain analysis via symmetric BEM. Eur. J. Mech. A/Solids. 2011; 30: 82-94.

[11]Bonnet M. Regularized direct and indirect symmetric variational BIE formulation for three-dimensional elasticity. Eng. Anal. Boundary Elem. 1995; 15: 93-102.

[12]Terravecchia S. Closed form coefficients in the symmetric boundary element approach. Eng. Anal. Boundary Elem. 2006; 30: 479-488.

[13]Panzeca T, Terravecchia S, Zito L. Computational aspects in 2D SBEM analysis with domain inelastic actions. Int. J. Numer. Meth. Engng. 2010; 82: 184-204.

[14]Zito L, Parlavecchio E, Panzeca T. On the computational aspects of a symmetric multidomain BEM approach for elastoplastic analysis. J. Strain Anal. 2011; 46: 103-120.

[15]Zito L, Cucco F, Parlavecchio E, Panzeca T. Incremental elastoplastic analysis for active macro-zones, Int. J. Numer. Meth. Engng. 91 (2012) 1365-1385.

[16] Cucco F, Panzeca T, Terravecchia S. Karnak.sGbem. Release 1.0, www.bemsoft.it, Palermo 2002.

[17]Panzeca T, Salerno M, Terravecchia S, Zito L. The symmetric Boundary Element Method for unilateral contact problems. Comp. Meth. In Appl. Mech. 2008; 197: 2667-2679.

[18]Salerno M, Terravecchia S, Zito L. Frictionless contact-detachment analysis: Iterative linear complementarity and quadratic programming approaches. Comp. Mech. 2013; 51: 553-566.