Häggmark, P. (1952). On a class of quintic diophantine equations in two unknowns. Almquist & Wiksells.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHäggmark, Per. On a Class of Quintic Diophantine Equations in Two Unknowns. Uppsala: Almquist & Wiksells, 1952.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHäggmark, Per. On a Class of Quintic Diophantine Equations in Two Unknowns. Almquist & Wiksells, 1952.
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