  We study the connection between minimal Liouville string theory and
generalized open KdV hierarchies. We are interested in generalizing Douglas
string equation formalism to the open topology case. We show that combining the
results of the closed topology, based on the Frobenius manifold structure and
resonance transformations, with the appropriate open case modification, which
requires the insertion of macroscopic loop operators, we reproduce the
well-known result for the expectation value of a bulk operator for the FZZT
brane coupled to the general (q,p) minimal model. The matching of the results
of the two setups gives new evidence of the connection between minimal
Liouville gravity and the theory of Topological Gravity.
