A correction to the definition of the constant introduced after Eq. (4) in [J. Opt. Soc. Am. A 30, 7–12 (2013) [CrossRef] ] is given.
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The expression for the constant introduced in the first line of text after Eq. (4) in  has a typographical error. The correct expression is as follows:
1. S. V. Savić, B. M. Notaroš, and M. M. Ilić, “Conformal cubical 3D transformation-based metamaterial invisibility cloak,” J. Opt. Soc. Am. A 30, 7–12 (2013). [CrossRef]