On the spectral problem for three-dimesional bi-Laplacian i鈥arabi University

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On the spectral problem for three-dimesional bi-Laplacian in the unit sphere

2024 路 Article
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袗胁褌芯褉谢邪褉

袛械褉械泻泻萤蟹: Bulletin of the Karaganda University. Mathematics Series

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袘褨谢褨屑 褋邪谢邪谢邪褉褘

General Mathematics