  We describe two recent results using data collected with the CLEO detector at
the CESR e+e- collider at energies near the Upsilon(4S). The first is a Dalitz
plot analysis of the decay D0->K0spi+pi-. We observe a rich structure including
the decay D0->K*+pi- which may be produced by D0-D0bar mixing or doubly
Cabibbo-suppressed decays. We also search for D0-D0bar mixing in the decay
D0->K*+e-nuebar. We observe no events and limit the mixing parameter R_mix to
be less than 0.87% at the 95% confidence level.
