Symmetry Analysis and Exact Solutions of Equations of Nonlinear Mathematical Physics by W.I. Fushchich, W.M. Shtelen, N.I. Serov.
by spin or (spin s = 1/2) field equations is emphasized because their solutions can be used for constructing solutions of other field equations insofar as fields with any spin may be constructed from spin s = 1/2 fields. A brief account of the main ideas of the book is presented in the Introduction....
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