SpringerLink (Online service), Retakh, V., Singer, I. M., & Etingof, P. The unity of mathematics: In honor of the ninetieth birthday of I.M. Gelfand.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSpringerLink (Online service), Vladimir Retakh, I. M. Singer, और Pavel Etingof. The Unity of Mathematics: In Honor of the Ninetieth Birthday of I.M. Gelfand.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSpringerLink (Online service), et al. The Unity of Mathematics: In Honor of the Ninetieth Birthday of I.M. Gelfand.
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