TY - JOUR DA - 1990 DO - 10.1016/0001-8708(90)90023-G LA - eng IS - 2 M2 - 137 PY - 1990 SN - 0001-8708 SP - 137-151 T2 - Advances in Mathematics TI - An identity in combinatorial extremal theory UR - https://nbn-resolving.org/urn:nbn:de:0070-pub-17805036 Y2 - 2024-11-24T15:19:15 ER -