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Author(s):
Hartmann, F.; Katz, C.; Protopsaltis, B. 
Title:
Boundary elements and symmetry 
Abstract:
This paper discusses the deficiencies of boundary element stiffness matrices, gives an account of the methods proposed to circumvent these defects and proposes a new procedure to obtain symmetric stiffness matrices. 
Journal title:
Ingenieur-Archiv 
Year:
1985 
Journal volume:
55 
Pages contribution:
440 - 449