Savić Slobodan V, Notaroš Branislav M, Ilić Milan M
J Opt Soc Am A Opt Image Sci Vis. 2015 Aug 1;32(8):1474. doi: 10.1364/JOSAA.32.001474.
A correction to the definition of the constant a introduced after Eq. (4) in [J. Opt. Soc. Am. A30, 7-12 (2013)JOAOD60740-323210.1364/JOSAA.30.000007] is given.