TY - GEN DA - 1973 LA - eng PY - 1973 SN - 0931-6558 TI - A simple model of imperfect competition, where 4 are few and 6 are many UR - https://nbn-resolving.org/urn:nbn:de:0070-pub-29096584 Y2 - 2025-01-31T21:46:23 ER -