共 7 条
- [3] Kelly JB, 1954, AM J MATH, V76, P786
- [4] ON CHROMATIC NUMBER OF FINITE SET-SYSTEMS [J]. ACTA MATHEMATICA ACADEMIAE SCIENTIARUM HUNGARICAE, 1968, 19 (1-2): : 59 - &
- [5] Matula DW, 1972, GRAPH THEORY COMPUTI, P109, DOI DOI 10.1016/B978-1-4832-3187-7.50015-5
- [6] WELSH DJA, 1967, COMPUT J, V10, P85