Cohn, J. H. E.
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MATHEMATICA SCANDINAVICA Vol. 42 (1978) - Articles
The Diophantine equation $y^2=Dx^4+1$, III.
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MATHEMATICA SCANDINAVICA Vol. 21 (1967) - Articles
Five Diophantine Equations.
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MATHEMATICA SCANDINAVICA Vol. 52 (1983) - Articles
Squares in arithmetical progressions I.
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MATHEMATICA SCANDINAVICA Vol. 52 (1983) - Articles
Squares in arithmetical progressions II.
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MATHEMATICA SCANDINAVICA Vol. 68 (1991) - Articles
The Diophantine equation $X(X + 1) = Y(Y^2 + 1)$.
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MATHEMATICA SCANDINAVICA Vol. 75 (1994) - Articles
On $n$-Sum Groups.
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MATHEMATICA SCANDINAVICA Vol. 82 No. 2 (1998) - Articles
The Diophantine system $x^2-6y^2=-5,\ x=2z^2-1$
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