L. Volkmann

Signed domination and signed domatic numbers of digraphs

Y.H. Bu, K.-W. Lih, W.F. Wang

Adjacent vertex distinguishing edge-colorings of planar graphs with girth at least six

D.R. Woodall

Defective choosability of graphs in surfaces

A.P. Santhakumaran, P. Titus

The connected forcing connected vertex detour number of a graph

L.L. Doty

Bounding neighbor-connectivity of Abelian Cayley graphs

A.P. Santhakumaran, S.V. Ullas Chandran

The hull number of strong product graphs

K. Dohmen

An inductive proof of Whitney's Broken Circuit Theorem

G.H. Fricke, S.M. Hedetniemi, S.T. Hedetniemi, K.R. Hutson

$\gamma$-graphs of graphs

G. Bullington, L. Eroh, R. Gera, S.J. Winters

Closed $k$-stop distance in graphs

L. Frigerio, F. Lastaria, N. Zagaglia Salvi

Adjacent vertex distinquishing edge colorings of the direct product of a regular graph by a path or cycle

P. Mihók, G. Semanišin

Unique factorization theorem for object-systems

T.A. McKee

Simplicial and nonsimplicial complete subgraphs

J. Czap, S. Jendrol', F. Kardoš

On strong parity chromatic number

Y.M. Borse, K. Dalvi, M. Shikare

Forbidden-minor characterization for the class of cographic element splitting matroids