SQL-Dump and refertial Integrity

Hi @All!

I have a problem on dumping a database:

If I export the Structure via pg_dump
the table are dumped in alphabetical order, but the order violates
the refenrential integrity of my db.

At inserting it via psql db < db_structure.sql it throws errors and the
database is not not correctly build on the other server. Tables are
missing.

Are there any known solutions or a workaround?

I would greatly appreciate receiving an helping answer even if this
question is very newbie-like.

Thank You

Thomas