TY - JOUR AU - Mitchell Begelman BT - Annals of the New York Academy of Sciences DA - 05/1986 DO - 10.1111/j.1749-6632.1986.tb47966.x PY - 1986 SP - 51 EP - 70 T2 - Annals of the New York Academy of Sciences TI - Toward a Unified Theory of Active Galactic Nuclei VL - 470 SN - 0077-8923 ER -