1 - Combinatorial mathematics and its applications : proceedings of a conference held at the Mathematical Institute, Oxford, from 7-10 july, 1969 |
2 - Complexity : knots, colourings and counting |
1 - Combinatorial mathematics and its applications : proceedings of a conference held at the Mathematical Institute, Oxford, from 7-10 july, 1969 |
2 - Complexity : knots, colourings and counting |