TY - CPAPER AU - Mitchell Begelman AU - Marek Sikora BT - AIP CY - College Park, Maryland (USA) DO - 10.1063/1.42240 PB - AIP PP - College Park, Maryland (USA) PY - 1992 SP - 568 EP - 571 T2 - AIP TI - Observational constraints on stellar wind models of broad emission lines of AGNs VL - 254 ER -