select col2.table_name, col2.column_name, fk.* from dba_constraints fk 
inner join dba_cons_columns col on fk.R_CONSTRAINT_NAME=col.constraint_name and fk.R_OWNER=col.owner
inner join dba_cons_columns col2 on fk.CONSTRAINT_NAME=col2.constraint_name and fk.OWNER=col2.owner
where col.table_name='GENERATED_STATEMENTS' and fk.constraint_type='R' order by 1,2

TABLE_NAME	        COLUMN_NAME	        OWNER	        CONSTRAINT_NAME	        TABLE_NAME
GENERATED_DOCUMENTS	GENERATED_STATEMENT_ID	ELECTRON_EXTR	FKB2AD800899A72823      GENERATED_DOCUMENTS
ZIPPED_STATEMENTS	GENERATED_STATEMENT_ID	ELECTRON_EXTR	FK65F1037599A72823	ZIPPED_STATEMENTS