List of FKeys ?

Hi,

could I get a list of foreign keys that refer to a column?

Say I have a  table_1 (t1_id integer ......)
and a lot of other tables that may refer to table 1.

Is there a command that lists all tables that have a foreign key that 
points to  t1_id?
Preferably with the "on update/delete" options of the relation.


Regards
Andreas