Magnetostatic self-energy can in principle be calculated by evaluating a certain sixfold integral, though this is not practical even for very simple cases. It is pointed out that some analytic transformation of this integral can facilitate computations, especially with an appropriate choice of Ritz models. A review of these is followed by a review of some of the methods that have been used for numerical evaluation of this energy term, in particular Brown's method of approaching the value by calculating rigorous upper and lower bounds.
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