howto matrixes containing e.g. vectors and matrixes and matrix operations

[Schoeller Sebastian]

dear all,

is it possible to create a multidimensional array, whereas a column may
contain matrixes or vectors like e.g.

ma = 

i11 i12=[1,2;3,4] i13=[1,2;3,4]
i21 i22=[5,6;7,8] i23=[1,2;3,4]
i31 i32=[9,2;3,4] i33=[1,2;3,4]

also i would like to be able to execute the operation 

ma(:,2)*ma(:,3)

is that somehow possible? do i have to use cells instead? i cannot find
any documentation on this subject easily, so i would be glad for a hint.

best greetings

sebastian