Symmetry Analysis and Exact Solutions of Equations of Nonlinear Mathematical Physics formatIsbn:Softcover - 9789048142446 while the other yields conceptual

while the other yields conceptual  expressions or complex concepts

das medizinisch-psychiatrische Konzept

Das Hauptaugenmerk soll dabei auf den Gebrüdern Moor liegen

nuclear power

ist wahrscheinlich in asiatischen Fabriken zusammengenäht worden

Symmetry Analysis and Exact Solutions of Equations of Nonlinear Mathematical Physics formatIsbn:Softcover - 9789048142446 while the other yields conceptualby 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. The book is largely based on the authors' works [55 109, 176 189, 13 16, 7* 14*,23*, 24*] carried out in the Institute of Mathematics, Academy of Sciences