How to identify tables that have a foreign key to a specific table in Sybase

I am looking for (preferably) an SQL statement that selects the table/and column names for any table with a foreign key to a given table in Sybase. I think it should be somehow possible with the sys... tables but being completely new to sybase, I cannot make head nor toe of it. So any help into the right direction is highly appreciated.

Edit: For completness' sake: SELECT @@VERSION returns

'Adaptive Server Enterprise/15.0.3/EBF 17156 ESD#3/P/Sun_svr4/OS 5.8/ase1503/2726/64-bit/FBO/Fri Feb 5 05:26:23 2010'

Edit 2
Thanks a lot for your suggestions, especially Andrew Bickerton's comment. That allowed me to construct a rudimentary SQL select statement for a starting point to go further.

In case someone else is interested in it, here it is:

select 
  fko.name    "Foreign key name",
  par.name    "Referenced table name",
  fk1.name || ' -> ' || pk1.name "Reference 1",
  fk2.name || ' -> ' || pk2.name "Reference 2",
  fk3.name || ' -> ' || pk3.name "Reference 3",
  fk4.name || ' -> ' || pk4.name "Reference 4"
from 
  sysobjects      tab                                       join
  sysconstraints  con on tab.id        = con.tableid        join
  sysobjects      fko on con.constrid  = fko.id             join
  sysreferences   ref on con.constrid  = ref.constrid       join
  sysobjects      par on par.id        = ref.reftabid  left join
  ---- 1. Column
  syscolumns      fk1 on ref.fokey1    = fk1.colid and
                         ref.tableid   = fk1.id        left join
  syscolumns      pk1 on ref.refkey1   = pk1.colid and
                         ref.reftabid  = pk1.id        left join
  ---- 2. Column
  syscolumns      fk2 on ref.fokey2    = fk2.colid and
                         ref.tableid   = fk2.id        left join
  syscolumns      pk2 on ref.refkey2   = pk2.colid and
                         ref.reftabid  = pk2.id        left join
  ---- 3. Column
  syscolumns      fk3 on ref.fokey3    = fk3.colid and
                         ref.tableid   = fk3.id        left join
  syscolumns      pk3 on ref.refkey3   = pk3.colid and
                         ref.reftabid  = pk3.id        left join
  ---- 4. Column
  syscolumns      fk4 on ref.fokey4    = fk4.colid and
                         ref.tableid   = fk4.id        left join
  syscolumns      pk4 on ref.refkey4   = pk4.colid and
                         ref.reftabid  = pk4.id        -- Et cetera...
where
  tab.type = 'U'      and
  tab.name = 'tq84_f' and
  fko.type = 'RI'