Janelidze, George
Street, Ross
Article History
Received: 31 December 2017
Accepted: 6 April 2018
First Online: 18 April 2018
Change Date: 12 May 2018
Change Type: Correction
Change Details: In the original publication of the article, Eq. (3.24) was published incorrectly. The corrected equation is given in this correction article. The original article has been corrected.