Partial orders based on the CS decomposition von Xu, S. Z., Chen, J. L., Benítez, J., Xu, S. Z., Chen, J. L., Benítez, J.

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A generalized mixed type of quartic, cubic, quadratic and additive functional equation von Rassias, J.M., Xu, T.Z., Xu, W.X.

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A generalized mixed type of quartic, cubic, quadratic and additive functional equation von Rassias, J. M., Xu, T. Z., Xu, W. X., Расіас, Дж. М., Ху, Т. З., Ху, В. Х.

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