Volume 62 (2009) number 3

Editorial

• C. Heuberger, S. G. Wagner: On a Class of Extremal Trees for Various Indices, pp. 437-464
• O. Rojo, L. Medina: Constructing Graphs with Energy sqrt(r)E(G) where G is a Bipartite Graph, pp. 465-472
• X. Lin, X. Guo: On the Minimal Energy of Trees with a Given Number of Vertices of Degree Two, pp. 473-480
• J. Zhang, B. Zhou: On Minimal Energies of Non-Starlike Trees with Given Number of Pendent Vertices, pp. 481-490
• Z. You, B. Liu, I. Gutman: Note on Hypoenergetic Graphs, pp. 491-498
• I. Gutman, A. Klobucar, S. Majstorovic, C. Adiga: Biregular Graphs whose Energy Exceeds the Number of Vertices, pp. 499-508
• S. Majstorovic, A. Klobucar, I. Gutman: Triregular Graphs whose Energy Exceeds the Number of Vertices, pp. 509-524
• P. Zhao, B. Zhao, X. Chen, Y. Bai: Two Classes of Chains with Maximal and Minimal Total pi-Electron Energy, pp. 525-536
• M. Robbiano, R. Jimenez: Applications of a Theorem by Ky Fan in the Theory of Laplacian Energy of Graphs, pp. 537-552
• B. Zhou: New Upper Bounds for Laplacian Energy, pp. 553-560
• M. Jooyandeh, D. Kiani, M. Mirzakhah: Incidence Energy of a Graph, pp. 561-572
• I. Gutman, D. Kiani, M. Mirzakhah: On Incidence Energy of Graphs, pp. 573-580
• J. Wang, Q. Huang, F. Belardo, E. M. Li Marzi: On the Spectral Characterization of Theta Graphs, pp. 581-598
• H. Deng: A Proof of a Conjecture on the Estrada Index, pp. 599-606
• H. Deng: A Note on the Estrada Index of Trees, pp. 607-610
• B. Zhou: On Sum of Powers of Laplacian Eigenvalues and Laplacian Estrada Index of Graphs, pp. 611-619
• L. Xu: The Second Largest Hosoya Index of Unicyclic Graphs, pp. 621-628
• K. Xu, B. Xu: Some Extremal Unicyclic Graphs with Respect to Hosoya Index and Merrifield-Simmons Index, pp. 629-648
• Y. Bai, B. Zhao, P. Zhao: Extremal Merrifield-Simmons Index and Hosoya Index of Polyphenyl Chains, pp. 649-656
• X. Chen, B. Zhao, P. Zhao: Six-Membered Ring Spiro Chains with Extremal Merrifield-Simmons Index and Hosoya Index, pp. 657-665
• K. C. Das: On the Largest Eigenvalue of the Distance Matrix of a Bipartite Graph, pp. 667-672
• Z. You, B. Liu: On the Spectral Properties of Line Distance Matrices, pp. 673-679
• A. Ilic, D. Stevanovic: On Comparing Zagreb Indices, pp. 681-687
• M. Liu, B. Liu: New Sharp Upper Bounds for the First Zagreb Index, pp. 689-698
• L. Sun, S. Wei: Comparing the Zagreb Indices for Connected Bicyclic Graphs, pp. 699-714
• D. Vukicevic: Variable Zagreb Indices of K_r+1-free Graphs, pp. 715-724
• B. Horoldagva, K. C. Das: Comparing Variable Zagreb Indices for Unicyclic Graphs, pp. 725-730
• Z. Huang, Y. Guo: A New Comparison between the Modified Zagreb M*₂ Index and the Randic Index for Benzenoid Systems, pp. 731-739
• B. Liu: Combinatorial Matrix Theory (Review by Z. You, I. Gutman), pp. 741-742

Documents

• A Picture from Iran, pp. 745-745
• M. V. Diudea: Two Poems, pp. 746-746