The linear spaces on 15 points
Brouwer, A. E.
Ars Comb. 12, 3-35 (1981).
A family of optimal trees
Eades, Peter; Jones, Leslie
Ars Comb. 12, 37-45 (1981).
Eulerian trails with prescribed degrees in tournaments
Das, Prabir
Ars Comb. 12, 47-50 (1981).
Existence of orthogonal diagonal latin squares
Wallis, W. D.; Zhu, L.
Ars Comb. 12, 51-68 (1981).
Consecutive eulerian tree graphs
Shank, H.
Ars Comb. 12, 69-71 (1981).
Perfect pair-coverings and an algorithm for certain (1-2) factorizations of the complete graph K//(2s+1)
Mullin, R. C.; Stanton, R. G.; Stinson, D. R.
Ars Comb. 12, 73-80 (1981).
Prime Boolean matrices – a graph theoretic approach
Gregory, David A.; Pullman, Norman J.
Ars Comb. 12, 81-110 (1981).
Isometric embeddability for graphs
Melter, R. A.; Tumescu, I.
Ars Comb. 12, 111-115 (1981).
A note on the decomposition of trees into isomorphic subtrees
Alon, Noga
Ars Comb. 12, 117-121 (1981).
On some particular disjoint and mutually balanced partial quadruple systems
Gionfriddo, Mario
Ars Comb. 12, 123-134 (1981).
Connected graphs with complementary edge-orbits
Gethner, Ellen; Hutchinson, Joan P.
Ars Comb. 12, 135-146 (1981).
Elliptic semiplanes. II: Structure theory
Baker, R. D.; Ebert, G. L.
Ars Comb. 12, 147-164 (1981).
Partitioning theorems for incomplete block designs
Jacroux, Mike
Ars Comb. 12, 165-177 (1981).
Some inequalities for block intersection numbers
Jacroux, Mike
Ars Comb. 12, 179-188 (1981).
Mutually orthogonal resolutions from finite geometries
Fuji-Hara, R.; Vanstone, S. A.
Ars Comb. 12, 189-207 (1981).
Automorphisms of circuit difference systems
Kelly, John B.
Ars Comb. 12, 209-228 (1981).
Some constructions for frames, room squars, and subsquares
Stinson, D. R.
Ars Comb. 12, 229-267 (1981).
Symmetric 2-designs having PSL(2,q) fixing a block
Kelly, Graham
Ars Comb. 12, 269-293 (1981).
The asymptotics of Menages numbers
Nechvatal, James
Ars Comb. 12, 295-301 (1981).
Tight subdesigns of symmetric designs
Baartmans, A.; Shrikhande, Mohan
Ars Comb. 12, 303-309 (1981).
Homogeneously n-traceable graphs
Chartrand, Gary; Lesniak-Foster, Linda; Wall, Curtiss E.
Ars Comb. 12, 311-317 (1981).
