**Contents**

*I. Gutman, B. Furtula*: Preface, pp. 1-7*X. Li, Y. Shi, L. Wang*: An Updated Survey on the Randic Index, pp. 9-47*D. Stevanovic*: On the Randic Index and Diameter of Chemical Graphs, pp. 49-55*X. Li, Y. Shi*: Some New Results on a Conjecture about the Randic Index, pp.57-72*Z. You, B. Liu*: On a Conjecture of the Randic Index, pp. 73-82*D. Vukicevic*: Upper Bound of Randic Index in Terms of Numbers of Vertices of Degree 1 and 2, pp. 83-90*A. Lin, R. Luo, D. A. Nelson, X. Zha*: The Second Largest Randic Index of Quasi-tree Graphs, pp. 91-108*H. Wu, X. Pan, H. Liu*: Minimizing Two Classes of Unicyclic Graphs on Randic Index, pp. 109-118*J. Wang, Y. Zhu, G. Liu*: On the Randic Index of Bicyclic Graphs, pp. 119-132*Y. Zhu, G. Liu, J. Wang*: On the Randic Index of Bicyclic Conjugated Molecules, pp. 133-144*R. Cui, Y. Jin*: The Max Tree for the General Randic Index, pp. 145-159*Y. Hu*: Trees with Second and Third Minimum General Randic Index, pp. 161-166*J. Zheng*: On Extremal Chemical Trees with Minimum General Randic Index R_alpha for alpha< 0, pp. 167-184*F. Li, Q. Ye*: A Sharp Lower Bound for the General Randic Index of Trees with a Given Size of Matching for -0.6412 < alpha<=-1/2, pp. 185-193*F. Li, Q. Ye*: On the General Randic Index of Cacti for -1 <= alpha < 0, pp. 195-204*B. Liu*: On a Conjecture about Comparing Zagreb Indices, pp. 205-209*X. Li, J. Zhang*: Extremal Zeroth-order Randic Index in Some Classes of Graphs, pp. 211-220*S. Chen, J. Li*: On The Zeroth-order General Randic Index of Thorn Graphs, pp. 221-226*G. Yu, L. Feng*: On the Zeroth-order General Randic Index of Graphs with Given Matching Number, pp. 227-233*Z. Huang, H. Deng*: On Zagreb Indices of Trees and Unicyclic Graphs with Perfect Matchings, pp. 235-250*L. Mu, C. Feng. H. He*: Modeling Diamagnetic Susceptibilities of Organic Compounds with the Novel Connectivity Index, pp. 251-282