Eccentric-connectivity index

Wasim Sajjad1, Mohammad Reza Farahani2, Mehdi Alaeiyan2, Seyed Hamid Hosseini2, Murat Cancan3
1School of Mathematical Sciences, Anhui University, Hefei, Anhui, 230601, P. R. China.
2Department of Mathematics and Computer Science, In University of Science and Technology (IUST), Narmak, Tehran, 16844, Iran.
3Faculty of Education, Yuzuncu Yil University, van, Turkey.