**Ars Combinatoria **

**Volume LI, February, 1999 **

**F. Gobel and C. Hoede **"Magic Labelings of Graphs"

**A. Meir and J.W. Moon **"On the Bipartition Numbers of Random Trees, II"

**Noboru Hamada **"The Nonexistence of Quaternary Linear Codes With Parameters [243,5,181],
[248,5,185] and [240,5,179]"

**B.J. Vowden and D.A. Preece **"Some New Infinite Series of Freeman-Youden Rectangles"

**William F. Klostermeyer **"Pushing Vertices and Orienting Edges"

**Cai Heng Li **"Finite Abelian Groups with the m-DCI Property"

**Yoshimi Egawa and Katsumi Inoue **"Radius of (2k-1)-Connected Graphs"

**JA.D. Keedwell **"What is the size of the smallest latin square for which a weakly completable critical set of cells exists?"

**J. Ivanco, M. Meszka and Z. Skupien **"Decomposition of Multigraphs into Isomorphic Graphs with Two Edges"

**Keiichi Handa **"Bipartitie Graphs with Balanced (a,b)-Partitions"

**Terry A. McKee **"An Inequality Characterizing Chordal Graphs"

**Stewart W. Neufeld **"The Concept of Diameter in Exponents of Symmetric Primitive Graphs"

**David A. Pike **"Hamilton Decompositions of Block-Intersection Graphs of Steiner Triple Systems"

**Cornelis Hoede **"A Comparison of Some Conditions for Non-Hamiltonicity of Graphs

**D.A. Preece, B.J. Vowden and N.C.K. Phillips **"Double Youden rectangles of sizes p(2p+1) and (p+1)(2p+1)"

**Suh-Ryung Kim **"On the Inequality dk(G) <= k(G) + 1"

**H.J. Broersma and C. Hoede **"Another equivalent of the graceful tree conjecture"

**A. Ali Ali and W. Staton **"The Extremal Question for Cycles with Chords"

**Rao Li **"A Note on Hamiltonian Cycles in K(1,r)-Free Graphs"

**G. Ram Kherwa, Jagdish Prasad and Bhagwandas **"Balanced Ternary Designs from any (v,b,r,k) Design"

**G.B. Khosrovshahi and R. Torabi **"Maximal Trades"

**Klaus Metsch and Bridget S. Webb **"A Note on the Cycle Structures of Automorphisms of 2-(v,k,1) Designs"

**Bolian Liu **"Generalized Exponents of Primitive, Nearly Reducible Matrices"

**J.L. Goldwasser and Cun-Quan Zhang **"Permutation graphs and Petersen graph"

**Bu Yue Hua and Zhang Ke Min **"Completely Strong Path-Connectivity of Local Tournaments"

**T. Gangopadhyay **"Some Results on Packing Graphs in their Complements"

**Qu Anjing **"On Complementary Consecutive Labelings of Octahedron"

**M. Mahdian and E.S. Mahmoodian **"A Characterization of Uniquely 2-List Colorable Graphs"

**Chang Yanxun and Ge Gennian **"Some new large sets of KTS(v)"

**liya Bluskov **"New Simple 3-Designs on 26 and 28 Points"

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