Thomas, D. K.
Abdul Halim, S. https://orcid.org/0000-0001-6956-3192
Funding for this research was provided by:
Universiti Malaya
Article History
Received: 29 June 2015
Revised: 6 May 2016
First Online: 25 May 2016
Change Date: 13 March 2018
Change Type: Correction
Change Details: The authors have retracted this article because the article contains major flaws in the proof of the main results. The results of the paper are invalid, since the assumption that the functionals considered are rotationally invariant is not valid. All authors have agreed to this retraction.