Institution: | a Department of Physics, Faculty of Sciences and Letters, Istanbul Technical University, Maslak 34469, Istanbul, Turkey b Center for Complex Networks and Systems Research, School of Informatics and Computing, Indiana University, Bloomington, IN 47408, USA c Department of Physics, Faculty of Sciences and Letters, Akdeniz University, Dumlup?nar Caddesi, 07058 Antalya, Turkey |