On the Hyers–Ulam–Rassias stability of functional equations in n-variables
2004 ◽
Vol 299
(2)
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pp. 375-391
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2008 ◽
Vol 24
(3)
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pp. 353-372
◽
2001 ◽
Vol 263
(2)
◽
pp. 406-423
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