Research Institute for Advanced Study (Baltimore, Md.)\nUniversity of Maryland, College Park. (1963). Contributions to Differential Equations. Interscience Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रResearch Institute for Advanced Study (Baltimore, Md.)\nUniversity of Maryland, College Park. Contributions to Differential Equations. New York: Interscience Publishers, 1963.
एमएलए (8वां संस्करण) प्रशस्ति पत्रResearch Institute for Advanced Study (Baltimore, Md.)\nUniversity of Maryland, College Park. Contributions to Differential Equations. Interscience Publishers, 1963.
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