Ulmschneider, P. (2006). Intelligent life in the universe: Principles and requirements behind its emergence (2nd ed.). Springer-Verlag.
Chicago Edition CitationUlmschneider, Peter. Intelligent Life in the Universe: Principles and Requirements Behind Its Emergence. 2nd ed. Berlin: Springer-Verlag, 2006.
MLA Edition CitationUlmschneider, Peter. Intelligent Life in the Universe: Principles and Requirements Behind Its Emergence. 2nd ed. Springer-Verlag, 2006.
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