  The exciton ground state in strained quantum dots similar to those fabricated
in article specified in the title is shortly discussed within a relevant model
Hamiltonian. Some characteristics of the light--hole exciton ground state
reached in a dot under the tensile biaxial strain appear to be sensitive to the
strain anisotropy breaking a purity of this state. It refers in particular to a
degree of the in--plane polarization of the emission and the fine structure of
the ground state.
