Bluman, G. W., & Bluman, G. W. K. (1989). Symmetries and differential equations. Springer.
Chicago Edition CitationBluman, George W., i George W.; Kumei Bluman. Symmetries and Differential Equations. New York: Springer, 1989.
Cita MLABluman, George W., i George W.; Kumei Bluman. Symmetries and Differential Equations. Springer, 1989.
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