BIBLIOTITLE specifies the string which is to be used as the header of the bibliography. It is not uncommon to use "Bibliography" here.
<CITSTYLE INTEXTSEQUENCE="AUTHORDATE"> <CITSEPARATOR>;</CITSEPARATOR> <RANGESEPARATOR>-</RANGESEPARATOR> <INTEXTDEF> <REFNUMBER> </REFNUMBER> </INTEXTDEF> </CITSTYLE>