An odd square as a sum of an odd number of odd squares

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Heng Huat Chan, Shaun Cooper, Wen-Chin Liaw Acta Arithmetica 132 (2008), 359-371 MSC: 11F03, 11F11, 11F20. DOI: 10.4064/aa132-4-5

Heng Huat ChanDepartment of Mathematics
National University of Singapore
2 Science Drive 2
Singapore 117543
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Shaun CooperMassey University
Albany Campus
Private Bag 102 904
North Shore Mail Centre
Auckland, New Zealand
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Wen-Chin LiawDepartment of Mathematics
National Chung Cheng University
Min-Hsiung, Chia-Yi, 62101
Taiwan, Republic of China
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