Squares in Lehmer sequences and the
 Diophantine equation $Ax^4-By^2=2$

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Pingzhi Yuan, Yuan Li Acta Arithmetica 139 (2009), 275-302 MSC: 11D25, 11B39. DOI: 10.4064/aa139-3-6

Pingzhi YuanSchool of Mathematics
South China Normal University
Guangzhou 510631, P.R. China
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Yuan LiMathematics Department
Winston-Salem State University
Winston-Salem, NC 27110, U.S.A.
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