Funding for this research was provided by:
Ahi Evran University Scientific Research Project (FEF.A4.17.008, FEF.A4.18.011)
1st Azerbaijan-Russia Joint Grant Competition (EIF-BGM-4-RFTF-1/2017-21/01/1)
Text and Data Mining valid from 2018-08-08
Received: 5 April 2018
Accepted: 15 July 2018
First Online: 8 August 2018
: The authors declare that they have no competing interests.