**Ars Combinatoria****Volume CIX, April, 2013**

**Katherine P. Benedetto and Nicholas A. Loehr**, “Domino Tiling Graphs”, pp. 3-29**Yanli Zhang, Qingde Kang and Yingtao Hou**, “Perfect T(G)-triple system for each graph G with five vertices and seven edges”, pp. 31-44**Shichang Shu**, “Willmore Lagrangian Submanifolds In Complex Euclidean Space”, pp. 45-64**Fadila Normahia Abd Manaf, Nor Haniza Sarmin, Ahmad Erfanian and Behnaz Tolue**, “The Relative n-th Commutativity Degree of 2-Generator p-Groups of Nilpotency Class Two”, pp. 65-70**Wenchang Chu, Xiaoyuan Wang and Wenlong Zhang**, “Partial Fraction Decomposition And Determinant Identities”, pp. 71-86**Jun Guo**, “Lattices associated with subspaces in d-bounded distance-regular graphs”, pp. 87-95**K.M. Koh, Zeinab Maleki and Behnaz Omoomi**, “On the total restrained domination edge critical graphs”, pp. 97-112**Kh. Md. Mominul Haque, Lin Xiaohui, Yang Yuansheng and Zhao Pingzhong**, “Prime labeling on Knödel graphs W_{3,n}“, pp. 113-128**Abdollah Khodkar, R. Saei and S.M. Sheikholeslami**, “Signed edge k-subdomination numbers in graphs”, pp. 129-141**Zhihe Liang**, “On the strongly c-harmoniousness of cycle with some chords”, pp. 143-160**Weiming Weng and Bolian Liu**, “Noncrossing matchings with fixed points”, pp. 161-170**Soumen Maity, Chrisil Arackaparambil and Kezhasono Meyase**, “A New Construction of Resilient Boolean Functions with High Nonlinearity”, pp. 171-192**S. Mirvakili and B. Davvaz**, “Applications of strongly transitive geometric spacves to n-ary hypergroups”, pp. 193-227**Fan Li and Mei Lu**, “On the zeroth-order general Randic index of unicycle graphs with k pendant vertices”, pp. 229-237**Yanfang Zhang, Qi Wang and Feifei Fan**, “Large sets of oriented P_{3}-decompositions of directed complete bipartite graphs”, pp. 239-246**F. Maffioli and N. Zagaglia Salvi**, “On Binary Matroids Not Isomorphic To Their Base Matroids”, pp. 247-256**Jing Wang, Lixi Zhang and Yuanqiu Huang**, “On the Crossing Number of the Cartesian Product of a 6-Vertex Graph with S_{n}“, pp. 257-266**Carmen Hernando, Merce Mora, Ignacio M. Pelayo and Carlos Seara**, “Some structural, metric and convex properties of the boundary of a graph”, pp. 267-283**K.-W. Hwang, D.V. Dolgy, D.S. Kim, T. Kim and S.H. Lee**, “Some Theorems On Bernoulli And Euler Numbers”, pp. 285-297**Jenq-Jong Lin and Min-Jen Jou**, “Trees with the fourth largest number of maximal independent sets”, pp. 299-308**Ilaria Cardinali and Bart De Bruyn**, “Spin-embeddings, two-intersection sets and two-weight codes”, pp. 309-319**Jianping Li and Bo Zhou**, “Atom-bond connectivity index of unicyclic graphs with perfect matchings”, pp. 321-326**M. Akram, N.O. Alshehri and H.A. Abujabal**, “Vague Lie Superalgebras”, pp. 327-344**Ruifang Liu, Huicai Jia and Jinjiang Yuan**, “Tree with minimal Laplacian spectral radius and diameter n-4”, pp. 345-352**Saniye Ergin and Ramazan Karatas**, “On The Dynamics Of A Recursive Sequence”, pp. 353-360**Zbigniew R. Bogdanowicz**, “On Properties of Working Paths in Optimal Set of Survivable Paths”, pp. 361-370**Yeh-Jong Pan and Chien-Tai Ting**, “Sign-Imbalance Of Alternating Permutations Avoiding A Pattern Of Length Three”, pp. 371-382**Min-Jen Jou**, “Independent sets in trees”, pp. 383-389**Andrzej Wloch and Malgorzata Wolowiec-Musial**, “Generalized Pell numbers and some relations with Fibonacci numbers”, pp. 391-403**Yunshu Gao, Guojun Li and Jin Yan**, “Notes on Hamiltonian Graphs and Hamiltonian-Connected Graphs”, pp. 405-414**Ajay K. Sharma and Sei-Ichiro Ueki**, “Angle Of Contact Of Lens And Lunar Maps And Products Of Composition And Iterated Differentiation”, pp. 415-423**Yu-hong Guo**, “n-Colour Even Compositions”, pp. 425-432**T. Kim, D.S. Kim, D.V. Dolgy and S.H. Rim**, “Some Identities On The Euler Numbers Arising From Euler Basis Polynomials”, pp. 433-446**Abdallah Laradji and Abdullahi Umar**, “On The Number Of Subpermutations With Fixed Orbit Size”, pp. 447-460**Mustafa Asci and Esref Gurel**, “Bivariate Gaussian Fibonacci And Lucas Polynomials”, pp. 461-472**Ouyang Zhangdong, Wang Jing and Huang Yuanqiu**, “The Degree-Sum of Adjacent Vertices, Girth and Upper Embeddability”, pp. 473-483**E.S. Mahmoodian and M.S. Najafian**, “Possible volumes of t-(v, t+1) Latin trades”, pp. 485-496**Alison Setyadi**, “Expanders and the Affine Building of Sp_{n}“, pp. 497-510**Shabnam Malik and Ahmad Mahmood Qureshi**, “Hamiltonian Cycles in Directed Toeplitz Graphs”, pp. 511-526**Pak Tung Ho**, “The Crossing Number of K_{2,4,n}“, pp. 527-537