TY - JOUR N1 - Bibliogr.: 292. p.; Abstract EP - 292 JF - Acta scientiarum mathematicarum IS - 1-2 SP - 287 SN - 0001-6969 A1 - Zorboska Nina Y1 - 1999/// AV - restricted ID - acta15757 UR - http://www.acta.hu KW - Matematika TI - Closed range essentially normal composition operators are normal VL - 65 ER -