| The number of latin squares of order eight | 1967/07/01 | English | |
| Packing a rectangle with congruent N-ominoes | 1969/09/01 | English | |
| Hamiltonian cycles in a graph of degree 4 | 1969/04/01 | English | |
| On a graph theorem by dirac | 1967/05/01 | English | |
| On direction-preserving maps of graphs | 1969/03/01 | English | |
| Characters and complexity of finite semigroups | 1969/01/01 | English | |
| Fastplättbare Graphen | 1967/12/01 | German | |
| The number of labeled k-trees | 1969/03/01 | English | |
| The number of labeled k-dimensional trees | 1969/03/01 | English | |
| On uniquely colorable planar graphs | 1969/04/01 | English | |
| Flows in infinite graphs | 1970/01/01 | English | |
| Notes on central groupoids | 1970/06/01 | English | |
| Bounds for the chromatic number of a graph | 1969/07/01 | English | |
| On a problem concerning separating systems of a finite set | 1969/11/01 | English | |
| A generalization of the linear complementarity problem | 1970/01/01 | English | |
| An enumeration of simplicial 4-polytopes with 8 vertices | 1967/06/01 | English | |
| Potential theory on a rhombic lattice | 1968/11/01 | English | |
| On dichromatic polynomials | 1967/05/01 | English | |
| Graphs, matroids, and geometric lattices | 1970/09/01 | English | |
| An enumeration of the sets of non-interfering arithmetic progressions with specified periods | 1967/05/01 | English | |
| Author index of volume 3 | 1967/12/01 | English | |
| Two non-isomorphic (ν, κ, λ) designs with similar incidence matrices | 1968/12/01 | English | |
| Author index of volume 8 | 1970/06/01 | English | |
| Generating Functions on idempotent semigroups with application to combinatorial analysis | 1968/11/01 | English | |
| An addition theorem for the elementary abelian group | 1968/07/01 | English | |
| A completely unambiguous 5-polyhedral graph | 1970/07/01 | English | |
| Research problems | 1967/10/01 | English | |
| Packing a rectangular box with the twelve solid pentominoes | 1969/11/01 | English | |
| Zum basisproblem der nicht in die projektive ebene einbettbaren graphen, I | 1970/07/01 | German | |
| Two new block designs | 1969/12/01 | English | |