University of IsfahanTransactions on Combinatorics2251-86576420171201On the average eccentricity, the harmonic index and the largest signless Laplacian eigenvalue of a graph43502147010.22108/toc.2017.21470ENHanyuan DengCollege of Mathematics and Computer Science, Hunan Normal University, Changsha, Hunan 410081, P. R. ChinaS. BalachandranDepartment of Mathematics, School of Humanities and Sciences,SASTRA University, Thanjavur, IndiaS. K. AyyaswamyDepartment of Mathematics, School of Humanities and Sciences,SASTRA University, Thanjavur, IndiaY. B. VenkatakrishnanDepartment of Mathematics, School of Humanities and Sciences,SASTRA University, Thanjavur, India20170308http://toc.ui.ac.ir/article_21470_6107bccf810358fdefb9471c7d0ba0a8.pdf