00296nam a2200097Ia 4500008004100000082001300041100002800054245006800082260004000150300000800190140113s9999    xx            000 0 und d  a311   M6  a"Hampel, F.R. et al�"  aRobust Statistics : the approached based on influence functions  a1986bJohn Wiley & SonscNew Jersey  a502