Stephani, H. (1989). Differential equations: Their solution using symmetries. Cambridge University Press.
Chicago-стиль цитированияStephani, Hans. Differential Equations: Their Solution Using Symmetries. Cambridge [England] ; New York: Cambridge University Press, 1989.
MLA-цитированиеStephani, Hans. Differential Equations: Their Solution Using Symmetries. Cambridge University Press, 1989.
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