A FIXED POINT APPROACH TO THE STABILITY OF THE QUADRATIC-ADDITIVE FUNCTIONAL EQUATION
2011 ◽
Vol 18
(4)
◽
pp. 313-328
◽
2013 ◽
Vol 7
◽
pp. 1557-1573
2012 ◽
Vol 25
(2)
◽
pp. 201-215
◽
2013 ◽
Vol 7
◽
pp. 2413-2428
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