An elementary solving of cubic Diophantine equations
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8. Yuan P. Z. Some basic problems in Diophantine equations. Ph. D. Thesis. Sichuan University, 1997.
Aleshnikov S., Aleshnikova M., Gorbachev A.
Diophantine equation, quadratic field, class number, Pell equation, divisibility, Gaussian integers, fundamental unit
40-47