These measurements are possible by using semileptonic decays of neutral
kaons and assuming the validity of the 
rule.
Due to a possible new interaction violating the
rule the above formula have to be modified according to Appendix A.
If the strangeness of the neutral kaon can be tagged at the time
of its production and at its decay we can measure the rate of a 
oscillating in a 
and its 
-conjugated process,
oscillating in a as well as the rate that a
decayed as a compared to its 
conjugated process.
The decay rate asymmetries constructed with these four rates
are a direct measurement of the and violation
in the 
mass and decay matrix:
and
In addition by measuring the time dependent rate difference of
and 
transitions, we obtain a
measurement of the oscillation frequency 
free of any
assumptions of symmetry violation in the mass and decay matrix in first
order:
