^In electromagnetics, the more traditional term "method of moments" is often used, though not always, as a synonymous of "boundary element method": see (Gibson 2008) for further information on the subject.
^The boundary element method is well suited for analyzing cracks in solids. There are several boundary element approaches for crack problems. One such approach is to formulate the conditions on the cracks in terms of hypersingular boundary integral equations, see (Ang 2013).