Urban, P. (1976). Current problems in elementary particle and mathematical physics. Springer-Verlag.
शिकागो स्टाइल उद्धरणUrban, Paul. Current Problems in Elementary Particle and Mathematical Physics. New York: Springer-Verlag, 1976.
एमएलए उद्धरणUrban, Paul. Current Problems in Elementary Particle and Mathematical Physics. Springer-Verlag, 1976.
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